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Mageia: 2020-0361 Critical: Squid Cache Poisoning and DoS Issues

mageia
Calendar Grey September 4, 2020
Dist Mageia Esm H88
Recent updates to the squid package fix critical vulnerabilities, focusing on risks like cache poisoning and request smuggling. For full details, review the specifics
An issue was discovered in Squid before 4.13

Summary

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 bro...

Read the Full Advisory

References

- https://bugs.mageia.org/show_bug.cgi?id=27211

- https://github.com/squid-cache/squid/security/advisories/GHSA-c7p8-xqhm-49wv

- https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg

- https://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98m

- https://www.cve.org/CVERecord?id=CVE-2020-15810

- https://www.cve.org/CVERecord?id=CVE-2020-15811

- https://www.cve.org/CVERecord?id=CVE-2020-24606

Topics%20covered

Topics Covered

security advisory cache poisoning Denial of Service request smuggling Mageia HTTP traffic

Resolution

SRPMS

- 7/core/squid-4.13-1.mga7

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 04 Sep 2020
URL: https://advisories.mageia.org/MGASA-2020-0361.html
Type: security
CVE: CVE-2020-15810, CVE-2020-15811, CVE-2020-24606

Topics%20covered

Topics Covered

security advisory cache poisoning Denial of Service request smuggling Mageia HTTP traffic

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