CVE-2020-15049

NameCVE-2020-15049
DescriptionAn issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2394-1, DSA-4732-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
squid (PTS)buster, buster (security)4.6-1+deb10u4fixed
bullseye, sid4.13-1fixed
squid3 (PTS)stretch3.5.23-5+deb9u1vulnerable
stretch (security)3.5.23-5+deb9u5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
squidsourcebuster4.6-1+deb10u3DSA-4732-1
squidsource(unstable)4.12-1
squid3sourcestretch3.5.23-5+deb9u5DLA-2394-1
squid3source(unstable)(unfixed)

Notes

https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5
Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch

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