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July 13, 2012 08:12 Ubuntu: New FFmpeg packages fix security vulnerabilities

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Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg incorrectly handled certain malformed DV files. If a user were tricked into opening a crafted DV file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg incorrectly handled certain malformed NSV files. If a user were tricked into opening a crafted NSV file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg incorrectly handled certain malformed MJPEG-B files. If a user were tricked into opening a crafted MJPEG-B file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg incorrectly handled certain malformed DPCM files. If a user were tricked into opening a crafted DPCM file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg incorrectly handled certain malformed KMVC files. If a user were tricked into opening a crafted KMVC file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that FFmpeg incorrectly handled certain malformed H.264 files. If a user were tricked into opening a crafted H.264 file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

It was discovered that FFmpeg incorrectly handled certain malformed ADPCM files. If a user were tricked into opening a crafted ADPCM file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that FFmpeg incorrectly handled certain malformed Atrac 3 files. If a user were tricked into opening a crafted Atrac 3 file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that FFmpeg incorrectly handled certain malformed Shorten files. If a user were tricked into opening a crafted Shorten file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

It was discovered that FFmpeg incorrectly handled certain malformed Vorbis files. If a user were tricked into opening a crafted Vorbis file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Fabian Yamaguchi discovered that FFmpeg incorrectly handled certain malformed VQA files. If a user were tricked into opening a crafted VQA file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Updated packages are available from security.ubuntu.com.

July 13, 2012 08:10 Ubuntu: New libav packages fix security vulnerabilities

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Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed DV files. If a user were tricked into opening a crafted DV file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed NSV files. If a user were tricked into opening a crafted NSV file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed Kega Game Video (KGV1) files. If a user were tricked into opening a crafted Kega Game Video (KGV1) file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed MJPEG-B files. If a user were tricked into opening a crafted MJPEG-B file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed DPCM files. If a user were tricked into opening a crafted DPCM file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed KMVC files. If a user were tricked into opening a crafted KMVC file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Jeong Wook Oh discovered that Libav incorrectly handled certain malformed ASF files. If a user were tricked into opening a crafted ASF file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that Libav incorrectly handled certain malformed Westwood SNDx files. If a user were tricked into opening a crafted Westwood SNDx file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Diana Elena Muscalu discovered that Libav incorrectly handled certain malformed AAC files. If a user were tricked into opening a crafted AAC file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

It was discovered that Libav incorrectly handled certain malformed H.264 files. If a user were tricked into opening a crafted H.264 file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that Libav incorrectly handled certain malformed ADPCM files. If a user were tricked into opening a crafted ADPCM file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that Libav incorrectly handled certain malformed Atrac 3 files. If a user were tricked into opening a crafted Atrac 3 file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

It was discovered that Libav incorrectly handled certain malformed Shorten files. If a user were tricked into opening a crafted Shorten file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. It was discovered that Libav incorrectly handled certain malformed Vorbis files. If a user were tricked into opening a crafted Vorbis file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program. Fabian Yamaguchi discovered that Libav incorrectly handled certain malformed VQA files. If a user were tricked into opening a crafted VQA file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary code with the privileges of the user invoking the program.

Updated packages are available from security.ubuntu.com.

July 11, 2012 05:53 Ubuntu: New APT packages fix security vulnerabilities

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Georgi Guninski discovered that APT relied on GnuPG argument order and did not check GPG subkeys when validating imported keyrings via apt-key net-update. While it appears that a man-in-the-middle attacker cannot exploit this, as a hardening measure this update adjusts apt-key to validate all subkeys when checking for key collisions. Updated packages are available from security.ubuntu.com.

July 11, 2012 05:51 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was discovered in the KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Schacher Raindel discovered a flaw in the memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. Stephan Mueller reported a flaw in the dl2k network driver’s handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service.

Timo Warns reported multiple flaws in the hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. Xi Wang discovered a flaw in the i915 graphics driver handling of cliprect on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges. Xi Wang discovered a flaw in the i915 graphics driver handling of buffer_count on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges.

Updated packages are available from security.ubuntu.com.

July 09, 2012 10:06 Ubuntu: New Linux kernel packages fix security vulnerabil...

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Andy Adamson discovered a flaw in the Linux kernel’s NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was discovered in the Linux kernel’s KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. Schacher Raindel discovered a flaw in the Linux kernel’s memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges.

Stephan Mueller reported a flaw in the Linux kernel’s dl2k network driver’s handling of ioctls. An unprivileged local user could leverage this flaw to cause a denial of service. Timo Warns reported multiple flaws in the Linux kernel’s hfsplus filesystem. An unprivileged local user could exploit these flaws to gain root system priviliges. Xi Wang discovered a flaw in the Linux kernel’s i915 graphics driver handling of cliprect on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges.

Xi Wang discovered a flaw in the Linux kernel’s i915 graphics driver handling of buffer_count on 32 bit systems. An unprivileged local attacker could leverage this flaw to cause a denial of service or potentially gain root privileges.

Updated packages are available from security.ubuntu.com.

July 09, 2012 10:05 Ubuntu: New Linux kernel packages fix security vulnerabil...

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Schacher Raindel discovered a flaw in the Linux kernel’s memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. Updated packages are available from security.ubuntu.com.

July 06, 2012 10:57 Ubuntu: New MySQL packages fix security vulnerabilities

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It was discovered that certain builds of MySQL incorrectly handled password authentication on certain platforms. A remote attacker could use this issue to authenticate with an arbitrary password and establish a connection. Updated packages are available from security.ubuntu.com.

July 02, 2012 09:39 Ubuntu: New python-nova packages fix security vulnerabili...

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It was discovered that, when defining security groups in Nova using the EC2 or OS APIs, specifying the network protocol (e.g. ‘TCP’) in the incorrect case would cause the security group to not be applied correctly. An attacker could use this to bypass Nova security group restrictions. Updated packages are available from security.ubuntu.com.

July 02, 2012 09:37 Ubuntu: New Firefox packages fix security vulnerabilities

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Security researchers discovered memory safety issues affecting Firefox. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute code with the privileges of the user invoking Firefox. It was discovered that Mozilla’s WebGL implementation exposed a bug in certain NVIDIA graphics drivers. The impact of this issue has not been disclosed at this time.

Adam Barth discovered that certain inline event handlers were not being blocked properly by the Content Security Policy’s (CSP) inline-script blocking feature. Web applications relying on this feature of CSP to protect against cross-site scripting (XSS) were not fully protected. With cross-site scripting vulnerabilities, if a user were tricked into viewing a specially crafted page, a remote attacker could exploit this to modify the contents, or steal confidential data, within the same domain. Paul Stone discovered that a viewed HTML page hosted on a Windows or Samba share could load Windows shortcut files (.lnk) in the same share. These shortcut files could then link to arbitrary locations on the local file system of the individual loading the HTML page. An attacker could potentially use this vulnerability to show the contents of these linked files or directories in an iframe, resulting in information disclosure.

Arthur Gerkis discovered a use-after-free vulnerability while replacing/inserting a node in a document. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit this to cause a denial of service via application crash, or potentially execute code with the privileges of the user invoking Firefox. Kaspar Brand discovered a vulnerability in how the Network Security Services (NSS) ASN.1 decoder handles zero length items. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit this to cause a denial of service via application crash.

Abhishek Arya discovered two buffer overflow and one use-after-free vulnerabilities. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute code with the privileges of the user invoking Firefox.

Updated packages are available from security.ubuntu.com.

June 28, 2012 21:05 Ubuntu: New bind packages fix security vulnerabilities

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Dan Luther discovered that Bind incorrectly handled zero length rdata fields. A remote attacker could use this flaw to cause Bind to crash or behave erratically, resulting in a denial of service. It was discovered that Bind incorrectly handled revoked domain names. A remote attacker could use this flaw to cause malicious domain names to be continuously resolvable even after they have been revoked.

Updated packages are available from security.ubuntu.com.

June 28, 2012 21:04 Ubuntu: New PostgreSQL packages fix security vulnerabilities

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It was discovered that PostgreSQL incorrectly handled certain bytes passed to the crypt() function when using DES encryption. An attacker could use this flaw to incorrectly handle authentication. It was discovered that PostgreSQL incorrectly handled SECURITY DEFINER and SET attributes on procedural call handlers. An attacker could use this flaw to cause PostgreSQL to crash, leading to a denial of service.

Updated packages are available from security.ubuntu.com.

June 25, 2012 07:27 Ubuntu: New Nut packages fix security vulnerabilities

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Sebastian Pohle discovered that Nut did not properly validate its input when receiving data over the network. If upsd was configured to allow connections over the network, a remote attacker could exploit this to cause a denial of service (application crash). Updated packages are available from security.ubuntu.com.

June 25, 2012 07:25 Ubuntu: New Linux kernel packages fix security vulnerabil...

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Andy Adamson discovered a flaw in the Linux kernel’s NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. A flaw was found in the Linux kernel’s KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. A flaw was discovered in the Linux kernel’s KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS.

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. Schacher Raindel discovered a flaw in the Linux kernel’s memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges.

Updated packages are available from security.ubuntu.com.

June 21, 2012 12:50 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was found in the Linux’s kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. Updated packages are available from security.ubuntu.com.

June 21, 2012 12:49 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was found in the Linux kernel’s KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier.

Updated packages are available from security.ubuntu.com.

June 21, 2012 12:48 Ubuntu: New OpenSSL packages fix security vulnerabilities

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Ivan Nestlerode discovered that the Cryptographic Message Syntax (CMS) and PKCS #7 implementations in OpenSSL returned early if RSA decryption failed. This could allow an attacker to expose sensitive information via a Million Message Attack (MMA). It was discovered that an integer underflow was possible when using TLS 1.1, TLS 1.2, or DTLS with CBC encryption. This could allow a remote attacker to cause a denial of service.

Updated packages are available from security.ubuntu.com.

June 19, 2012 10:47 Ubuntu: New Net-SNMP packages fix security vulnerabilities

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It was discovered that Net-SNMP incorrectly performed entry lookups in the extension table. A remote attacker could send a specially crafted request and cause the SNMP server to crash, leading to a denial of service. Updated packages are available from security.ubuntu.com.

June 19, 2012 10:44 Ubuntu: New feedparser packages fix security vulnerabilities

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It was discovered that feedparser did not properly sanitize ENTITY declarations in encoded fields. A remote attacker could exploit this to cause a denial of service via memory exhaustion. Updated packages are available from security.ubuntu.com.

June 11, 2012 08:44 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was found in the Linux kernel’s KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier.

Updated packages are available from security.ubuntu.com.

June 11, 2012 08:43 Ubuntu: New libxml2 packages fix security vulnerabilities

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Juri Aedla discovered that libxml2 contained an off by one error in its XPointer functionality. If a user or application linked against libxml2 were tricked into opening a specially crafted XML file, an attacker could cause the application to crash or possibly execute arbitrary code with the privileges of the user invoking the program. Updated packages are available from security.ubuntu.com.

June 11, 2012 08:39 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was found in the Linux’s kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. A flaw was found in the Linux kernel’s KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service.

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier.

Updated packages are available from security.ubuntu.com.

June 09, 2012 15:45 Ubuntu: New BackupPC packages fix security vulnerabilities

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It was discovered that BackupPC did not properly sanitize its input when processing RestoreFile error messages, resulting in a cross-site scripting (XSS) vulnerability. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data, within the same domain. Updated packages are available from security.ubuntu.com.

June 07, 2012 10:52 Ubuntu: New Update Manager packages fix security vulnerab...

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It was discovered that Update Manager created system state archive files with incorrect permissions when upgrading releases. A local user could possibly use this to read repository credentials. Felix Geyer discovered that the Update Manager Apport hook incorrectly uploaded certain system state archive files to Launchpad when reporting bugs. This could possibly result in repository credentials being included in public bug reports.

Updated packages are available from security.ubuntu.com.

June 07, 2012 10:49 Ubuntu: New Sudo packages fix security vulnerabilities

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It was discovered that sudo incorrectly handled network masks when using Host and Host_List. A local user who is listed in sudoers may be allowed to run commands on unintended hosts when IPv4 network masks are used to grant access. A local attacker could exploit this to bypass intended access restrictions. Updated packages are available from security.ubuntu.com.

June 05, 2012 08:14 Ubuntu: New Quagga packages fix security vulnerabilities

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It was discovered that Quagga incorrectly handled Link State Update messages with invalid lengths. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. It was discovered that Quagga incorrectly handled messages with a malformed Four-octet AS Number Capability. A remote attacker could use this flaw to cause Quagga to crash, resulting in a denial of service. Updated packages are available from security.ubuntu.com.

May 31, 2012 08:48 Ubuntu: New Linux kernel packages fix security vulnerabil...

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A flaw was found in the Linux’s kernels ext4 file system when mounted with a journal. A local, unprivileged user could exploit this flaw to cause a denial of service. A flaw was discovered in the Linux kernel’s cifs file system. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. A flaw was found in the Linux kernel’s ext4 file system when mounting a corrupt filesystem. A user-assisted remote attacker could exploit this flaw to cause a denial of service.

Updated packages are available from security.ubuntu.com.

May 29, 2012 05:01 Ubuntu: New Horizon packages fix security vulnerabilities

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Matthias Weckbecker discovered a cross-site scripting (XSS) vulnerability in Horizon via the log viewer refresh mechanism. If a user were tricked into viewing a specially crafted log message, a remote attacker could exploit this to modify the contents or steal confidential data within the same domain. Thomas Biege discovered a session fixation vulnerability in Horizon. An attacker could exploit this to potentially allow access to unauthorized information and capabilities.

Updated packages are available from security.ubuntu.com.

May 29, 2012 05:00 Ubuntu: New PHP packages fix security vulnerabilities

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It was discovered that PHP, when used as a stand alone CGI processor for the Apache Web Server, did not properly parse and filter query strings. This could allow a remote attacker to execute arbitrary code running with the privilege of the web server. Updated packages are available from security.ubuntu.com.

May 29, 2012 04:58 Ubuntu: New Nova packages fix security vulnerabilities

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Dan Prince discovered that Nova did not enforce quotas for security groups and rules added to security groups. An authenticated user could exploit this to cause a denial of service. Updated packages are available from security.ubuntu.com.

May 25, 2012 06:49 Ubuntu: New Libtasn1 packages fix security vulnerabilities

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Matthew Hall discovered that Libtasn1 incorrectly handled certain large values. An attacker could exploit this with a specially crafted ASN.1 structure and cause a denial of service, or possibly execute arbitrary code. Updated packages are available from security.ubuntu.com.

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