Test ID:	1.3.6.1.4.1.25623.1.1.10.2020.0361
Category:	Mageia Linux Local Security Checks
Title:	Mageia: Security Advisory (MGASA-2020-0361)
Summary:	The remote host is missing an update for the 'squid' package(s) announced via the MGASA-2020-0361 advisory.
Description:	Summary: The remote host is missing an update for the 'squid' package(s) announced via the MGASA-2020-0361 advisory. Vulnerability Insight: An issue was discovered in Squid before 4.13. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream (CVE-2020-15810). An issue was discovered in Squid before 4.13. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches (CVE-2020-15811). Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF (CVE-2020-24606). Affected Software/OS: 'squid' package(s) on Mageia 7. Solution: Please install the updated package(s). CVSS Score: 7.1 CVSS Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2020-15810 Debian Security Information: DSA-4751 (Google Search) https://www.debian.org/security/2020/dsa-4751 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/ https://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98m https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html SuSE Security Announcement: openSUSE-SU-2020:1346 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html SuSE Security Announcement: openSUSE-SU-2020:1369 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html https://usn.ubuntu.com/4477-1/ https://usn.ubuntu.com/4551-1/ Common Vulnerability Exposure (CVE) ID: CVE-2020-15811 https://github.com/squid-cache/squid/security/advisories/GHSA-c7p8-xqhm-49wv Common Vulnerability Exposure (CVE) ID: CVE-2020-24606 http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg
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