Ubuntu Security Notice 4184-2 - USN-4184-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. Also, the update introduced a regression that broke KVM guests where extended page tables are disabled or not supported. This update addresses both issues. Various other issues were also addressed.

Ubuntu Security Notice 4183-2 - USN-4183-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. This update addresses the issue. Various other issues were also addressed.

Ubuntu Security Notice 4185-3 - USN-4185-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. Also, the update introduced a regression that broke KVM guests where extended page tables are disabled or not supported. This update addresses both issues. Various other issues were also addressed.

Ubuntu Security Notice 4186-3 - USN-4186-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 was incomplete on 64-bit Intel x86 systems. This update addresses the issue. Various other issues were also addressed.

Ubuntu Security Notice 3199-3 - USN-3199-1 fixed a vulnerability in Python Crypto. This update provides the corresponding update for Ubuntu 12.04 ESM. A It was discovered that the ALGnew function in block_templace.c in the A Python Cryptography Toolkit contained a heap-based buffer overflow A vulnerability. A remote attacker could use this flaw to execute A arbitrary code by using a crafted initialization vector parameter. Various other issues were also addressed.

Whitepaper called Reinstallation Attacks: Forcing Nonce Reuse in WPA2. This research paper will be presented on at the Computer and Communications Security (CCS) conference on November 1, 2017. This paper details a flaw in the WPA2 protocol itself and most devices that makes use of WPA2 are affected.

Ubuntu Security Notice 3616-1 - It was discovered that Python Crypto incorrectly generated ElGamal key parameters. A remote attacker could possibly use this issue to obtain sensitive information.

Ubuntu Security Notice 3616-2 - USN-3616-1 fixed a vulnerability in Python Crypto. This update provides the corresponding update for Ubuntu 12.04 ESM. It was discovered that Python Crypto incorrectly generated ElGamal key parameters. A remote attacker could possibly use this issue to obtain sensitive information. Various other issues were also addressed.

Ubuntu Security Notice 3727-1 - It was discovered that Bouncy Castle incorrectly handled certain crypto algorithms. A remote attacker could possibly use these issues to obtain sensitive information, including private keys.

Ubuntu Security Notice 3901-1 - Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

The No cON Name 2019 call for papers has been announced. It will be held in Barcelona, Spain, from November 14th and 15th, 2019.

47 bytes small Linux/x86 (NOT|ROT+8 Encoded) execve(/bin/sh) null free shellcode.

114 bytes small Linux/x86 random bytes encoder and XOR/SUB/NOT/ROR execve(/bin/sh) shellcode.

Ubuntu Security Notice 4279-2 - USN-4279-1 fixed vulnerabilities in PHP. The updated packages caused a regression. This update fixes the problem. It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS. It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 19.10. Various other issues were also addressed.

Ubuntu Security Notice 4330-1 - It was discovered that PHP incorrectly handled certain file uploads. An attacker could possibly use this issue to cause a crash. It was discovered that PHP incorrectly handled certain PHAR archive files. An attacker could possibly use this issue to access sensitive information. It was discovered that PHP incorrectly handled certain EXIF files. An attacker could possibly use this issue to access sensitive information or cause a crash. Various other issues were also addressed.

Ubuntu Security Notice 4333-1 - It was discovered that Python incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. It was discovered that Python incorrectly handled certain HTTP requests. An attacker could possibly use this issue to cause a denial of service.