SECURITY

USN-3594-1: Linux kernel vulnerability linux vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 LTS Summary The system could be made to expose sensitive information. Software Description linux – Linux kernel Details USN-3542-1 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 14.04 LTS. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS linux-image-3.13.0-143-generic – 3.13.0-143.192 linux-image-3.13.0-143-generic-lpae – 3.13.0-143.192 linux-image-3.13.0-143-lowlatency – 3.13.0-143.192 linux-image-generic – 3.13.0.143.153 linux-image-generic-lpae – [ more… ]

USN-3592-2: ClamAV vulnerabilities clamav vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 12.04 ESM Summary Several security issues were fixed in ClamAV. Software Description clamav – Anti-virus utility for Unix Details USN-3592-1 fixed several vulnerabilities in ClamAV. This update provides the corresponding update for Ubuntu 12.04 ESM. Original advisory details: It was discovered that ClamAV incorrectly handled parsing certain PDF files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-0202) Hanno Böck discovered that ClamAV incorrectly handled parsing certain XAR files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2018-1000085) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM clamav [ more… ]

USN-3593-1: Zsh vulnerabilities zsh vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Several security issues were fixed in Zsh. Software Description zsh – shell with lots of features Details It was discovered that Zsh incorrectly handled certain enviroment variables. An attacker could possibly use this issue to gain privileged access to the system. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-10070) It was discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-10071) It was discovered that Zsh incorrectly handled some symbolic links. An attacker could possibly use this to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2014-10072) It was discovered that Zsh incorrectly handled certain errors. An attacker [ more… ]

USN-3592-1: ClamAV vulnerabilities clamav vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.10 Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary Several security issues were fixed in ClamAV. Software Description clamav – Anti-virus utility for Unix Details It was discovered that ClamAV incorrectly handled parsing certain PDF files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-0202) Hanno Böck discovered that ClamAV incorrectly handled parsing certain XAR files. A remote attacker could use this issue to cause ClamAV to crash, resulting in a denial of service. (CVE-2018-1000085) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10 clamav – 0.99.4+addedllvm-0ubuntu0.17.10.1 Ubuntu 16.04 LTS clamav – 0.99.4+addedllvm-0ubuntu0.16.04.1 Ubuntu 14.04 LTS clamav – 0.99.4+addedllvm-0ubuntu0.14.04.1 To [ more… ]