CVE-2024-49767

NameCVE-2024-49767
DescriptionWerkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1086062, 1086063

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-werkzeug (PTS)jessie, jessie (lts)0.9.6+dfsg-1+deb8u3vulnerable
stretch (lts), stretch0.11.15+dfsg1-1+deb9u2vulnerable
buster (security), buster, buster (lts)0.14.1+dfsg1-4+deb10u2vulnerable
bullseye (security), bullseye1.0.1+dfsg1-2+deb11u1vulnerable
bookworm2.2.2-3vulnerable
sid, trixie3.0.4-1vulnerable
quart (PTS)bullseye0.14.1-1vulnerable
bookworm0.18.3-2vulnerable
sid, trixie0.19.9-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-werkzeugsource(unstable)(unfixed)1086062
quartsource(unstable)0.19.9-11086063

Notes

https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2
Fixed by: https://github.com/pallets/werkzeug/commit/8760275afb72bd10b57d92cb4d52abf759b2f3a7 (3.0.6)
Fixed by: https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee (0.19.7)

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