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November 12, 2012 08:49 Ubuntu: Security update for the Linux kernel

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An error was discovered in the Linux kernel’s network TUN/TAP device implementation. A local user with access to the TUN/TAP interface (which is not available to unprivileged users until granted by a root user) could exploit this flaw to crash the system or potential gain administrative privileges. Updated packages are available from security.ubuntu.com.

November 12, 2012 08:48 Debian: Security update for bacula

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It was discovered that bacula, a network backup service, does not properly enforce console ACLs. This could allow information about resources to be dumped by an otherwise-restricted client. Updated packages are available from security.debian.org.

November 12, 2012 08:48 Debian: Security update for hostapd

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Timo Warns discovered that the internal authentication server of hostapd, a user space IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP Authenticator, is vulnerable to a buffer overflow when processing fragmented EAP-TLS messages. As a result, an internal overflow checking routine terminates the process. An attacker can abuse this flaw to conduct denial of service attacks via crafted EAP-TLS messages prior to any authentication. Updated packages are available from security.debian.org.

November 12, 2012 08:46 Debian: Security update for Icedove

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Several vulnerabilities were discovered in Icedove, Debian’s version of the Mozilla Thunderbird mail and news client. This includes several instances of use-after-free and buffer overflow issues. The reported vulnerabilities could lead to the execution of arbitrary code, and additionally to the bypass of content-loading restrictions via the location object. Updated packages are available from security.debian.org.

November 09, 2012 08:29 Debian: Security update for libxslt

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Nicholas Gregoire and Cris Neckar discovered several memory handling bugs in libxslt, which could lead to denial of service or the execution of arbitrary code if a malformed document is processed.

Updated packages are available from security.debian.org.

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 10:05 Red Hat: Security update for FreeRADIUS

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FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service (RADIUS) server, designed to allow centralized authentication and authorization for a network. A buffer overflow flaw was discovered in the way radiusd handled the expiration date field in X.509 client certificates. A remote attacker could possibly use this flaw to crash radiusd if it were configured to use the certificate or TLS tunnelled authentication methods (such as EAP-TLS, EAP-TTLS, and PEAP).

Updated packages are available from ftp.redhat.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 07, 2012 10:03 Debian: Security update for Tiff

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Several vulnerabilities were discovered in Tiff, a library set and tools to support the Tag Image File Format (TIFF), allowing denial of service and potential privilege escalation. Updated packages are available from security.debian.org.

November 05, 2012 23:04 Red Hat: Security update for FreeRADIUS

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FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service (RADIUS) server, designed to allow centralized authentication and authorization for a network. A buffer overflow flaw was discovered in the way radiusd handled the expiration date field in X.509 client certificates. A remote attacker could possibly use this flaw to crash radiusd if it were configured to use the certificate or TLS tunnelled authentication methods (such as EAP-TLS, EAP-TTLS, and PEAP).

Updated packages are available from ftp.redhat.com.

November 05, 2012 23:03 Red Hat: Security update for the Linux kernel

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The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way socket buffers (skb) requiring TSO (TCP segment offloading) were handled by the sfc driver. If the skb did not fit within the minimum-size of the transmission queue, the network card could repeatedly reset itself. A remote attacker could use this flaw to cause a denial of service. A use-after-free flaw was found in the xacct_add_tsk() function in the Linux kernel’s taskstats subsystem. A local, unprivileged user could use this flaw to cause an information leak or a denial of service.

A buffer overflow flaw was found in the hfs_bnode_read() function in the HFS Plus (HFS+) file system implementation. A local user able to mount a specially-crafted HFS+ file system image could use this flaw to cause a denial of service or escalate their privileges. A flaw was found in the way the msg_namelen variable in the rds_recvmsg() function of the Reliable Datagram Sockets (RDS) protocol implementation was initialized. A local, unprivileged user could use this flaw to leak kernel stack memory to user-space.

Updated packages are available from ftp.redhat.com.

November 05, 2012 23:02 Red Hat: Security update for FreeRADIUS

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FreeRADIUS is a high-performance and highly configurable free Remote Authentication Dial In User Service (RADIUS) server, designed to allow centralized authentication and authorization for a network. A buffer overflow flaw was discovered in the way radiusd handled the expiration date field in X.509 client certificates. A remote attacker could possibly use this flaw to crash radiusd if it were configured to use the certificate or TLS tunnelled authentication methods (such as EAP-TLS, EAP-TTLS, and PEAP).

Updated packages are available from ftp.redhat.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 11:15 Debian: Security update for Iceape

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Several vulnerabilities have been discovered in Iceape, an internet suite based on Seamonkey. The reported vulnerabilities could lead to the execution of arbitrary code or the bypass of content-loading restrictions via the location object. 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 09:29 Red Hat: Security update for the Linux kernel

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The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw was found in the i915_gem_do_execbuffer() function in the Intel i915 driver. A local, unprivileged user could use this flaw to cause a denial of service. This issue only affected 32-bit systems. A memory leak flaw was found in the way memory subsystem handled resource clean up in the mmap() failure path when the MAP_HUGETLB flag was set. A local, unprivileged user could use this flaw to cause a denial of service.

A race condition was found in the way access to inet->opt ip_options was synchronized in the TCP/IP protocol suite implementation. Depending on the network facing applications running on the system, a remote attacker could possibly trigger this flaw to cause a denial of service. A local, unprivileged user could use this flaw to cause a denial of service regardless of the applications the system runs. A flaw was found in the way dl2k driver, used by certain D-Link Gigabit Ethernet adapters, restricted IOCTLs. A local, unprivileged user could use this flaw to issue potentially harmful IOCTLs, which could cause Ethernet adapters using the dl2k driver to malfunction (for example, losing network connectivity).

A flaw was found in the way the msg_namelen variable in the rds_recvmsg() function of Reliable Datagram Sockets (RDS) protocol implementation was initialized. A local, unprivileged user could use this flaw to leak kernel stack memory to user-space.

Updated packages are available from ftp.redhat.com.

October 31, 2012 09:28 Debian: Security update for Iceweasel

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Several vulnerabilities have been discovered in Iceweasel, a web browser based on Firefox. The included XULRunner library provides rendering services for several other applications included in Debian.

Updated packages are available from security.debian.org.

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 09:25 Debian: Security update for ISC DHCP

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Glen Eustace discovered that the ISC DHCP server, a server for automatic IP address assignment, is not properly handling changes in the expiration times of a lease. An attacker may use this flaw to crash the service and cause denial of service conditions, by reducing the expiration time of an active IPv6 lease.

Updated packages are available from security.debian.org.

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.

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