CVE-2023-27530

NameCVE-2023-27530
DescriptionA DoS vulnerability exists in Rack <v3.0.4.2, <v2.2.6.3, <v2.1.4.3 and <v2.0.9.3 within in the Multipart MIME parsing code in which could allow an attacker to craft requests that can be abuse to cause multipart parsing to take longer than expected.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3392-1, DSA-5530-1
Debian Bugs1032803

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+deb10u3DLA-3392-1
ruby-racksourcebullseye2.1.4-3+deb11u1DSA-5530-1
ruby-racksource(unstable)2.2.6.4-11032803

Notes

https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388
https://github.com/rack/rack/commit/8e8869d625e73e16b576b6d31b50208e9ec8002f (main)
https://github.com/rack/rack/commit/9aac3757fe19cdb0476504c9245170115bec9668 (v2.2.6.3)
https://github.com/rack/rack/commit/b632718265fa5ffa547b060331341a1e216b4ffa (v2.1.4.3)
https://github.com/rack/rack/commit/5f6e2fcbbdbff2dfaa21baa693e9d23d12ac1459 (v2.0.9.3)

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