Ubuntu Security Notice 1472-1 - 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. Various other issues were also addressed.
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Ubuntu Security Notice 1492-1 - 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 privileges.
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Ubuntu Security Notice 1491-1 - 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 privileges.
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Ubuntu Security Notice 1490-1 - 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 privileges. A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS). Various other issues were also addressed.
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Ubuntu Security Notice 1489-1 - A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS).
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Ubuntu Security Notice 1488-1 - 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 privileges. A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS). Various other issues were also addressed.
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Ubuntu Security Notice 1487-1 - A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS).
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Ubuntu Security Notice 1486-1 - A flaw was discovered in the Linux kernel's NFSv4 (Network file system) handling of ACLs (access control lists). A remote NFS server (attacker) could cause a denial of service (OOPS).
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Ubuntu Security Notice 1485-1 - Florian Weimer discovered that AccountsService incorrectly handled privileges when copying certain files to the system cache directory. A local attacker could exploit this issue to read arbitrary files, bypassing intended permissions.
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Ubuntu Security Notice 1484-1 - It was discovered that PyCrypto produced inappropriate prime numbers when generating ElGamal keys. An attacker could use this flaw to facilitate brute-forcing of ElGamal encryption keys.
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Ubuntu Security Notice 1483-2 - USN-1483-1 fixed a vulnerability in NetworkManager by disabling the creation of WPA-secured AdHoc wireless connections. This update provides the corresponding change for network-manager-applet. It was discovered that certain wireless drivers incorrectly handled the creation of WPA-secured AdHoc connections. This could result in AdHoc wireless connections being created without any security at all. This update removes WPA as a security choice for AdHoc connections in NetworkManager. Various other issues were also addressed.
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Ubuntu Security Notice 1483-1 - It was discovered that certain wireless drivers incorrectly handled the creation of WPA-secured AdHoc connections. This could result in AdHoc wireless connections being created without any security at all. This update removes WPA as a security choice for AdHoc connections in NetworkManager.
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Ubuntu Security Notice 1463-6 - USN-1463-1 fixed vulnerabilities in Firefox. This update provides the corresponding fixes for Thunderbird. Jesse Ruderman, Igor Bukanov, Bill McCloskey, Christian Holler, Andrew McCreight, Olli Pettay, Boris Zbarsky, and Brian Bondy discovered memory safety issues affecting 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. Various other issues were also addressed.
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Ubuntu Security Notice 1463-5 - USN-1463-2 fixed a bug in Unity 2D exposed by a recent Firefox update. It was discovered that the issue was only partially fixed on Ubuntu 11.04. When Thunderbird was started from the launcher, Thunderbird was still unable to obtain pointer grabs under certain conditions. This update fixes the problem. USN-1463-1 fixed vulnerabilities in Firefox. The Firefox update exposed a bug in Unity 2D which resulted in Firefox being unable to obtain pointer grabs in order to open popup menus. This update fixes the problem. Various other issues were also addressed.
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Ubuntu Security Notice 1463-4 - USN-1463-1 fixed vulnerabilities in Firefox. This update provides the corresponding fixes for Thunderbird. Jesse Ruderman, Igor Bukanov, Bill McCloskey, Christian Holler, Andrew McCreight, Olli Pettay, Boris Zbarsky, and Brian Bondy 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. Various other issues have also been addressed.
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Ubuntu Security Notice 1463-3 - USN-1463-1 fixed vulnerabilities in Firefox. The new package caused a regression in the rendering of Hebrew text and the ability of the Hotmail inbox to auto-update. This update fixes the problem.
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Ubuntu Security Notice 1482-2 - USN-1482-1 fixed vulnerabilities in ClamAV. The updated packages could fail to install in certain situations. This update fixes the problem. It was discovered that ClamAV incorrectly handled certain malformed TAR archives. A remote attacker could create a specially-crafted TAR file containing malware that could escape being detected. It was discovered that ClamAV incorrectly handled certain malformed CHM files. A remote attacker could create a specially-crafted CHM file containing malware that could escape being detected. Various other issues were also addressed.
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Ubuntu Security Notice 1481-1 - It was discovered that PHP incorrectly handled certain Tidy::diagnose operations on invalid objects. A remote attacker could use this flaw to cause PHP to crash, leading to a denial of service. It was discovered that PHP incorrectly handled certain multi-file upload filenames. A remote attacker could use this flaw to cause a denial of service, or to perform a directory traversal attack. Rubin Xu and Joseph Bonneau discovered that PHP incorrectly handled certain Unicode characters in passwords passed to the crypt() function. A remote attacker could possibly use this flaw to bypass authentication. Various other issues were also addressed.
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Ubuntu Security Notice 1482-1 - It was discovered that ClamAV incorrectly handled certain malformed TAR archives. A remote attacker could create a specially-crafted TAR file containing malware that could escape being detected. It was discovered that ClamAV incorrectly handled certain malformed CHM files. A remote attacker could create a specially-crafted CHM file containing malware that could escape being detected. Various other issues were also addressed.
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Ubuntu Security Notice 1480-1 - Timothy D. Morgan discovered that Raptor would unconditionally load XML external entities. If a user were tricked into opening a specially crafted document in an application linked against Raptor, an attacker could possibly obtain access to arbitrary files on the user's system or potentially execute arbitrary code with the privileges of the user invoking the program.
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Ubuntu Security Notice 1478-1 - 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. This issue only affected Ubuntu 11.10. 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. This issue only affected Ubuntu 11.04 and Ubuntu 11.10. Various other issues were also addressed.
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Ubuntu Security Notice 1479-1 - 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. Various other issues were also addressed.
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Ubuntu Security Notice 1477-1 - Georgi Guninski discovered that APT did not properly validate imported keyrings via apt-key net-update. USN-1475-1 added additional verification for imported keyrings, but it was insufficient. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could potentially be used to install altered packages. This update corrects the issue by disabling the net-update option completely. A future update will re-enable the option with corrected verification.
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Ubuntu Security Notice 1476-1 - 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. Various other issues were also addressed.
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Ubuntu Security Notice 1463-2 - USN-1463-1 fixed vulnerabilities in Firefox. The Firefox update exposed a bug in Unity 2D which resulted in Firefox being unable to obtain pointer grabs in order to open popup menus. This update fixes the problem.
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Ubuntu Security Notice 1475-1 - 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.
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