CVE-2024-49761

NameCVE-2024-49761
DescriptionREXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby2.1 (PTS)jessie, jessie (lts)2.1.5-2+deb8u14vulnerable
ruby2.3 (PTS)stretch (security)2.3.3-1+deb9u11vulnerable
stretch (lts), stretch2.3.3-1+deb9u12vulnerable
ruby2.5 (PTS)buster, buster (lts)2.5.5-3+deb10u7vulnerable
buster (security)2.5.5-3+deb10u6vulnerable
ruby2.7 (PTS)bullseye2.7.4-1+deb11u1vulnerable
bullseye (security)2.7.4-1+deb11u2vulnerable
ruby3.1 (PTS)bookworm (security), bookworm3.1.2-7+deb12u1vulnerable
sid, trixie3.1.2-8.4vulnerable
ruby3.2 (PTS)sid3.2.3-1vulnerable
ruby3.3 (PTS)sid, trixie3.3.5-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby2.1source(unstable)(unfixed)
ruby2.3source(unstable)(unfixed)
ruby2.5source(unstable)(unfixed)
ruby2.7source(unstable)(unfixed)
ruby3.1source(unstable)(unfixed)
ruby3.2source(unstable)(unfixed)
ruby3.3source(unstable)(unfixed)

Notes

https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m
https://github.com/ruby/rexml/commit/ce59f2eb1aeb371fe1643414f06618dbe031979f (v3.3.9)
https://www.ruby-lang.org/en/news/2024/10/28/redos-rexml-cve-2024-49761/

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