Ubuntu Security Notice 2936-1 – Christian Holler, Tyson Smith, Phil Ringalda, Gary Kwong, Jesse Ruderman, Mats Palmgren, Carsten Book, Boris Zbarsky, David Bolter, Randell Jesup, Andrew McCreight, and Steve Fink discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Various other issues were also addressed.

Ubuntu Security Notice 2952-2 – USN-2952-1 fixed vulnerabilities in PHP. One of the backported patches caused a regression in the PHP Soap client. This update fixes the problem. It was discovered that the PHP Zip extension incorrectly handled directories when processing certain zip files. A remote attacker could possibly use this issue to create arbitrary directories. It was discovered that the PHP Soap client incorrectly validated data types. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

Debian Linux Security Advisory 3559-1 – Multiple security issues have been found in Iceweasel, Debian’s version buffer overflows may lead to the execution of arbitrary code or denial of service.

Ubuntu Security Notice 2955-1 – A use-after-free was discovered when responding synchronously to permission requests. An attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking the program. An out-of-bounds read was discovered in V8. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via renderer crash. Various other issues were also addressed.

Ubuntu Security Notice 2934-1 – Bob Clary, Christoph Diehl, Christian Holler, Andrew McCreight, Daniel Holbert, Jesse Ruderman, and Randell Jesup discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.

Ubuntu Security Notice 2950-2 – USN-2950-1 fixed vulnerabilities in Samba. The updated Samba packages introduced a compatibility issue with NTLM authentication in libsoup. This update fixes the problem. Jouni Knuutinen discovered that Samba contained multiple flaws in the DCE/RPC implementation. A remote attacker could use this issue to perform a denial of service, downgrade secure connections by performing a man in the middle attack, or possibly execute arbitrary code. Various other issues were also addressed.