An update for squid is now available for openEuler-20.03-LTS-SP1 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2022-1851 Final 1.0 1.0 2022-08-19 Initial 2022-08-19 2022-08-19 openEuler SA Tool V1.0 2022-08-19 squid security update An update for squid is now available for openEuler-20.03-LTS-SP1. Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests. Security Fix(es): An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it s off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can t affect adjacent memory blocks, and thus just leads to a crash while processing.(CVE-2019-12521) An update for squid is now available for openEuler-20.03-LTS-SP1. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High squid https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1851 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2019-12521 https://nvd.nist.gov/vuln/detail/CVE-2019-12521 openEuler-20.03-LTS-SP1 squid-4.9-11.oe1.aarch64.rpm squid-debuginfo-4.9-11.oe1.aarch64.rpm squid-debugsource-4.9-11.oe1.aarch64.rpm squid-4.9-11.oe1.src.rpm squid-debuginfo-4.9-11.oe1.x86_64.rpm squid-debugsource-4.9-11.oe1.x86_64.rpm squid-4.9-11.oe1.x86_64.rpm An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it s off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can t affect adjacent memory blocks, and thus just leads to a crash while processing. 2022-08-19 CVE-2019-12521 openEuler-20.03-LTS-SP1 Medium 5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H squid security update 2022-08-19 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2022-1851