CVE-2022-44572

NameCVE-2022-44572
DescriptionA denial of service vulnerability in the multipart parsing component of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1 and 3.0.0.1 could allow an attacker tocraft input that can cause RFC2183 multipart boundary parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3298-1, DSA-5530-1
Debian Bugs1029832

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby-rack (PTS)buster2.0.6-3vulnerable
buster (security)2.0.6-3+deb10u4fixed
bullseye2.1.4-3+deb11u1fixed
bullseye (security)2.1.4-3+deb11u2fixed
bookworm2.2.6.4-1fixed
bookworm (security)2.2.6.4-1+deb12u1fixed
sid, trixie2.2.7-1.1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby-racksourcebuster2.0.6-3+deb10u2DLA-3298-1
ruby-racksourcebullseye2.1.4-3+deb11u1DSA-5530-1
ruby-racksource(unstable)2.2.4-31029832

Notes

https://github.com/rack/rack/commit/dc50f8e495f67eb933b1fc33ebee550908d945e6 (v2.0.9.2)
https://github.com/rack/rack/commit/8291f502b0e1dcf514cc25c34e4bf0beec7a92ae (v2.1.4.2)
https://github.com/rack/rack/commit/19e49f0f185d7e42ed5b402baec6c897a8c48029 (v2.2.6.1)

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