[월:] 2019년 12월

USN-4212-1: HAProxy vulnerability haproxy vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Summary HAProxy could be made to execute arbitrary code if it received a specially crafted HTTP/2 header. Software Description haproxy – fast and reliable load balancing reverse proxy Details Tim Düsterhus discovered that HAProxy incorrectly handled certain HTTP/2 headers. An attacker could possibly use this issue to execute arbitrary code through CRLF injection. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 haproxy – 2.0.5-1ubuntu0.3 Ubuntu 19.04 haproxy – 1.8.19-1ubuntu1.3 Ubuntu 18.04 LTS haproxy – 1.8.8-1ubuntu0.9 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2019-19330 Source: USN-4212-1: HAProxy vulnerability

USN-4182-4: Intel Microcode regression intel-microcode regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 14.04 ESM Summary USN-4182-2 introduced a regression in the Intel Microcode for some Skylake processors. Software Description intel-microcode – Processor microcode for Intel CPUs Details USN-4182-2 provided updated Intel Processor Microcode. A regression was discovered that caused some Skylake processors to hang after a warm reboot. This update reverts the microcode for that specific processor family. We apologize for the inconvenience. Original advisory details: Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions (TSX) could expose memory contents previously stored in microarchitectural buffers to a malicious process that is executing on the same CPU core. A [ more… ]

USN-4182-3: Intel Microcode regression intel-microcode regression A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 19.10 Ubuntu 19.04 Ubuntu 18.04 LTS Ubuntu 16.04 LTS Summary USN-4182-1 introduced a regression in the Intel Microcode for some Skylake processors. Software Description intel-microcode – Processor microcode for Intel CPUs Details USN-4182-1 provided updated Intel Processor Microcode. A regression was discovered that caused some Skylake processors to hang after a warm reboot. This update reverts the microcode for that specific processor family. We apologize for the inconvenience. Original advisory details: Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions (TSX) could expose memory contents previously stored in microarchitectural buffers to a malicious process that is [ more… ]