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November 19, 2012 12:53 Ubuntu: Security update for the Linux kernel

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Vadim Ponomarev discovered a flaw in the Linux kernel causing a reference leak when PID namespaces are used. A remote attacker could exploit this flaw causing a denial of service. A flaw was found in how the Linux kernel’s KVM (Kernel-based Virtual Machine) subsystem handled MSI (Message Signaled Interrupts). A local unprivileged user could exploit this flaw to cause a denial of service or potentially elevate privileges.

Updated packages are available from security.ubuntu.com.

November 16, 2012 11:17 Ubuntu: Security update for Quagga

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It was discovered that Quagga incorrectly handled certain malformed messages. 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.

November 16, 2012 11:16 Ubuntu: Security update for MoinMoin

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It was discovered that MoinMoin did not properly sanitize certain input, 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. It was discovered that MoinMoin incorrectly handled group names that contain virtual group names such as “All”, “Known” or “Trusted”. This could result in a remote user having incorrect permissions.

Updated packages are available from security.ubuntu.com.

November 16, 2012 11:15 Ubuntu: Security update for Ruby

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Shugo Maedo and Vit Ondruch discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. Updated packages are available from security.ubuntu.com.

November 16, 2012 11:12 Ubuntu: Security update for Ruby

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Tyler Hicks and Shugo Maeda discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. Updated packages are available from security.ubuntu.com.

November 14, 2012 10:23 Ubuntu: Security update for Bind

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Jake Montgomery discovered that Bind incorrectly handled certain specific combinations of RDATA. A remote attacker could use this flaw to cause Bind to crash, resulting in a denial of service.

Updated packages are available from security.ubuntu.com.

November 14, 2012 10:19 Ubuntu: Security update for Firefox

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Henrik Skupin, Jesse Ruderman, and others discovered several memory corruption flaws in Firefox. If a user were tricked into opening a specially crafted web page, a remote attacker could cause Firefox to crash or potentially execute arbitrary code as the user invoking the program. David Bloom and Jordi Chancel discovered that Firefox did not always properly handle the <select> element. A remote attacker could exploit this to conduct URL spoofing and clickjacking attacks. Collin Jackson discovered that Firefox did not properly follow the HTML5 specification for document.domain behavior. A remote attacker could exploit this to conduct cross-site scripting (XSS) attacks via javascript execution.

Johnny Stenback discovered that Firefox did not properly perform security checks on tests methods for DOMWindowUtils. Alice White discovered that the security checks for GetProperty could be bypassed when using JSAPI. If a user were tricked into opening a specially crafted web page, a remote attacker could exploit this to execute arbitrary code as the user invoking the program. Mariusz Mlynski discovered a history state error in Firefox. A remote attacker could exploit this to spoof the location property to inject script or intercept posted data.

Mariusz Mlynski and others discovered several flays in Firefox that allowed a remote attacker to conduct cross-site scripting (XSS) attacks. Abhishek Arya, Atte Kettunen and others discovered several memory flaws in Firefox when using the Address Sanitizer tool. If a user were tricked into opening a specially crafted web page, a remote attacker could cause Firefox to crash or potentially execute arbitrary code as the user invoking the program.

Updated packages are available from security.ubuntu.com.

November 09, 2012 08:27 Ubuntu: Security update for Python

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It was discovered that Python would prepend an empty string to sys.path under certain circumstances. A local attacker with write access to the current working directory could exploit this to execute arbitrary code. It was discovered that the audioop module did not correctly perform input validation. If a user or automatated system were tricked into opening a crafted audio file, an attacker could cause a denial of service via application crash. Giampaolo Rodola discovered several race conditions in the smtpd module. A remote attacker could exploit this to cause a denial of service via daemon outage.

It was discovered that the CGIHTTPServer module did properly perform input validation on certain HTTP GET requests. A remote attacker could potentially obtain access to CGI script source files. Niels Heinen discovered that the urllib and urllib2 modules would process Location headers that specify a redirection to file: URLs. A remote attacker could exploit this to obtain sensitive information or cause a denial of service. It was discovered that SimpleHTTPServer did not use a charset parameter in the Content-Type HTTP header. An attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks against Internet Explorer 7 users.

It was discovered that Python distutils contained a race condition when creating the ~/.pypirc file. A local attacker could exploit this to obtain sensitive information. It was discovered that SimpleXMLRPCServer did not properly validate its input when handling HTTP POST requests. A remote attacker could exploit this to cause a denial of service via excessive CPU utilization. It was discovered that Python was susceptible to hash algorithm attacks. An attacker could cause a denial of service under certian circumstances. This updates adds the ‘-R’ command line option and honors setting the PYTHONHASHSEED environment variable to ‘random’ to salt str and datetime objects with an unpredictable value.

Updated packages are available from security.ubuntu.com.

November 09, 2012 08:26 Ubuntu: Security update for libxslt

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Chris Evans discovered that libxslt incorrectly handled generate-id XPath functions. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could obtain potentially sensitive information. It was discovered that libxslt incorrectly parsed certain patterns. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. Nicholas Gregoire discovered that libxslt incorrectly handled unexpected DTD nodes. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service.

Nicholas Gregoire discovered that libxslt incorrectly managed memory. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service. Nicholas Gregoire discovered that libxslt incorrectly handled certain transforms. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code. Cris Neckar discovered that libxslt incorrectly managed memory. If a user or automated system were tricked into processing a specially crafted XSLT document, a remote attacker could cause libxslt to crash, causing a denial of service, or possibly execute arbitrary code.

Updated packages are available from security.ubuntu.com.

November 09, 2012 08:24 Ubuntu: Security update for devscripts

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Raphael Geissert discovered that the debdiff.pl tool incorrectly handled shell metacharacters. If a user or automated system were tricked into processing a specially crafted filename, a remote attacher could possibly execute arbitrary code. Raphael Geissert discovered that the dscverify tool incorrectly escaped arguments to external commands. If a user or automated system were tricked into processing specially crafted files, a remote attacher could possibly execute arbitrary code. Raphael Geissert discovered that the dget tool incorrectly performed input validation. If a user or automated system were tricked into processing specially crafted files, a remote attacher could delete arbitrary files.

Raphael Geissert discovered that the dget tool incorrectly escaped arguments to external commands. If a user or automated system were tricked into processing specially crafted files, a remote attacher could possibly execute arbitrary code. Jim Meyering discovered that the annotate-output tool incorrectly handled temporary files. A local attacker could use this flaw to alter files being processed by the annotate-output tool. On Ubuntu 11.04 and later, this issue was mitigated by the Yama kernel symlink restrictions.

Updated packages are available from security.ubuntu.com.

November 09, 2012 08:22 Ubuntu: Security update for Python

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It was discovered that SimpleXMLRPCServer did not properly validate its input when handling HTTP POST requests. A remote attacker could exploit this to cause a denial of service via excessive CPU utilization. It was discovered that Python was susceptible to hash algorithm attacks. An attacker could cause a denial of service under certian circumstances. This updates adds the ‘-R’ command line option and honors setting the PYTHONHASHSEED environment variable to ‘random’ to salt str and datetime objects with an unpredictable value.

Updated packages are available from security.ubuntu.com.

November 07, 2012 10:07 Ubuntu: Security update for xdiagnose

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Alec Warner discovered that xdiagnose improperly handled temporary files in welcome.py when creating user-initiated archive files. While failsafeX does not use the vulnerable code, this update removes this functionality to protect any 3rd party applications which import the vulnerable code. In the default Ubuntu installation, this should be prevented by the Yama link restrictions.

Updated packages are available from security.ubuntu.com.

November 07, 2012 10:04 Ubuntu: Security update for libxml2

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Juri Aedla discovered that libxml2 incorrectly handled certain memory operations. 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.

November 07, 2012 10:03 Ubuntu: Security update for Emacs

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Hiroshi Oota discovered that Emacs incorrectly handled search paths. If a user were tricked into opening a file with Emacs, a local attacker could execute arbitrary Lisp code with the privileges of the user invoking the program. Paul Ling discovered that Emacs incorrectly handled certain eval forms in local-variable sections. If a user were tricked into opening a specially crafted file with Emacs, a remote attacker could execute arbitrary Lisp code with the privileges of the user invoking the program. Updated packages are available from security.ubuntu.com.

November 05, 2012 23:01 Ubuntu: Security update for QEMU

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It was discovered that QEMU incorrectly handled certain VT100 escape sequences. A guest user with access to an emulated character device could use this flaw to cause QEMU to crash, or possibly execute arbitrary code on the host.

Updated packages are available from security.ubuntu.com.

November 05, 2012 22:58 Ubuntu: Security update for GNU C Library

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It was discovered that positional arguments to the printf() family of functions were not handled properly in the GNU C Library. An attacker could possibly use this to cause a stack-based buffer overflow, creating a denial of service or possibly execute arbitrary code. It was discovered that multiple integer overflows existed in the strtod(), strtof() and strtold() functions in the GNU C Library. An attacker could possibly use this to trigger a stack-based buffer overflow, creating a denial of service or possibly execute arbitrary code.

Updated packages are available from security.ubuntu.com.

November 02, 2012 11:14 Ubuntu: Security update for Transmission

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Justin C. Klein Keane discovered that the Transmission web client incorrectly escaped certain strings. If a user were tricked into opening a specially crafted torrent file, an attacker could possibly exploit this to conduct cross-site scripting (XSS) attacks.

Updated packages are available from security.ubuntu.com.

November 02, 2012 11:13 Ubuntu: Security update for FreeRADIUS

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Timo Warns discovered that FreeRADIUS incorrectly handled certain long timestamps in client certificates. A remote attacker could exploit this flaw and cause the FreeRADIUS server to crash, resulting in a denial of service, or possibly execute arbitrary code.

Updated packages are available from security.ubuntu.com.

November 02, 2012 11:12 Ubuntu: Security update for RubyGems

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John Firebaugh discovered that the RubyGems remote gem fetcher did not properly verify SSL certificates. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation. John Firebaugh discovered that the RubyGems remote gem fetcher allowed redirection from HTTPS to HTTP. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation.

Updated packages are available from security.ubuntu.com.

November 02, 2012 11:11 Ubuntu: Security update for Ruby

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It was discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. John Firebaugh discovered that the RubyGems remote gem fetcher did not properly verify SSL certificates. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation. John Firebaugh discovered that the RubyGems remote gem fetcher allowed redirection from HTTPS to HTTP. A remote attacker could exploit this to perform a man in the middle attack to alter gem files being downloaded for installation.

Updated packages are available from security.ubuntu.com.

October 31, 2012 09:26 Ubuntu: Security update for Ghostscript

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Marc Schönefeld discovered that Ghostscript did not correctly handle certain image files. If a user or automated system were tricked into opening a specially crafted file, an attacker could cause a denial of service and possibly execute arbitrary code with user privileges.

Updated packages are available from security.ubuntu.com.

October 31, 2012 09:24 Ubuntu: Security update for the Linux kernel

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Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel.

Updated packages are available from security.debian.org.

October 29, 2012 08:16 Ubuntu: Security update for DBus

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Sebastian Krahmer discovered that DBus incorrectly handled environment variables when running with elevated privileges. A local attacker could possibly exploit this flaw with a setuid binary and gain root privileges.

Updated packages are available from security.ubuntu.com.

October 29, 2012 08:13 Ubuntu: Security update for the Linux kernel

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Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel. A flaw was discovered in the madvise feature of the Linux kernel’s memory subsystem. An unprivileged local use could exploit the flaw to cause a denial of service (crash the system).

Updated packages are available from security.ubuntu.com.

October 26, 2012 15:02 Ubuntu: Security update for ISC DHCP server

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Glen Eustace discovered that the DHCP server incorrectly handled IPv6 expiration times. A remote attacker could use this issue to cause DHCP to crash, resulting in a denial of service. Dan Rosenberg discovered that the DHCP AppArmor profile could be escaped by using environment variables. This update mitigates the issue by sanitizing certain variables in the DHCP shell scripts.

Updated packages are available from security.ubuntu.com.

October 26, 2012 14:59 Ubuntu: Security update for GnuPG

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It was discovered that GnuPG used a short ID when downloading keys from a keyserver, even if a long ID was requested. An attacker could possibly use this to return a different key with a duplicate short key id.

Updated packages are available from security.ubuntu.com.

October 26, 2012 14:55 Ubuntu: Security update for PHP

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It was discovered that PHP incorrectly handled certain character sequences when applying HTTP response-splitting protection. A remote attacker could create a specially-crafted URL and inject arbitrary headers. It was discovered that PHP incorrectly handled directories with a large number of files. This could allow a remote attacker to execute arbitrary code with the privileges of the web server, or to perform a denial of service. It was discovered that PHP incorrectly parsed certain PDO prepared statements. A remote attacker could use this flaw to cause PHP to crash, leading to a denial of service.

Updated packages are available from security.ubuntu.com.

October 24, 2012 07:38 Ubuntu: Security update for the Linux kernel

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Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel.

Updated packages are available from security.ubuntu.com.

October 24, 2012 07:34 Ubuntu: Security update for the Linux kernel

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A flaw was found in how the Linux kernel passed the replacement session keyring to a child process. An unprivileged local user could exploit this flaw to cause a denial of service (panic). Ben Hutchings reported a flaw in the Linux kernel with some network drivers that support TSO (TCP segment offload). A local or peer user could exploit this flaw to to cause a denial of service. Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel implementation of RDS sockets. A local unprivileged user could potentially use this flaw to read privileged information from the kernel.

A flaw was discovered in the madvise feature of the Linux kernel’s memory subsystem. An unprivileged local use could exploit the flaw to cause a denial of service (crash the system).

Updated packages are available from security.ubuntu.com.

October 22, 2012 21:13 Ubuntu: Security update for Bind

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It was discovered that Bind incorrectly handled certain specially crafted long resource records. A remote attacker could use this flaw to cause Bind to crash, resulting in a denial of service. Updated packages are available from security.ubuntu.com.

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