CVE-2025-52520

NameCVE-2025-52520
DescriptionFor some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4244-1
Debian Bugs1109111, 1109112

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tomcat10 (PTS)bookworm, bookworm (security)10.1.34-0+deb12u2vulnerable
forky, sid, trixie10.1.40-1vulnerable
tomcat11 (PTS)forky, sid, trixie11.0.6-1vulnerable
tomcat9 (PTS)bullseye9.0.43-2~deb11u10vulnerable
bullseye (security)9.0.107-0+deb11u1fixed
bookworm9.0.70-2fixed
forky, sid, trixie9.0.95-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tomcat10source(unstable)(unfixed)1109112
tomcat11source(unstable)(unfixed)1109111
tomcat9sourcebullseye9.0.107-0+deb11u1DLA-4244-1
tomcat9source(unstable)9.0.70-2

Notes

Starting with 9.0.70-2 src:tomcat9 no longer ships the server stack, using that as the fixed version
https://github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90db (11.0.9)
https://github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45c (10.1.43)
https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040 (9.0.107)

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