Ubuntu Security Notice 2796-1 – Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash). It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. Various other issues were also addressed.

Ubuntu Security Notice 2798-1 – It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). Various other issues were also addressed.

Ubuntu Security Notice 2797-1 – It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. Various other issues were also addressed.

OpenSSL alternative chains certificate forgery exploit that has been tested on OpenSSL 1.0.2c, 1.0.2b, 1.0.1o, 1.0.1n, and Fedora 22 (1.0.1k-fips). This is a stand-alone ruby exploit and does not require Metasploit.

Ubuntu Security Notice 2799-1 – It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). Various other issues were also addressed.

Ubuntu Security Notice 2793-1 – Federico Scrinzi discovered that LibreOffice incorrectly handled documents inserted into Writer or Calc via links. If a user were tricked into opening a specially crafted document, a remote attacker could possibly obtain the contents of arbitrary files. It was discovered that LibreOffice incorrectly handled PrinterSetup data stored in ODF files. If a user were tricked into opening a specially crafted ODF document, a remote attacker could cause LibreOffice to crash, and possibly execute arbitrary code. Various other issues were also addressed.

Ubuntu Security Notice 2795-1 – It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). Various other issues were also addressed.

Ubuntu Security Notice 2792-1 – Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash). It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. Various other issues were also addressed.

Cryptocat versions prior to 2.0.22 are vulnerability to a script injection vulnerability.