CVE-2024-52303

Name	CVE-2024-52303
Description	aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In versions starting with 3.10.6 and prior to 3.10.11, a memory leak can occur when a request produces a MatchInfoError. This was caused by adding an entry to a cache on each request, due to the building of each MatchInfoError producing a unique cache entry. An attacker may be able to exhaust the memory resources of a server by sending a substantial number (100,000s to millions) of such requests. Those who use any middlewares with aiohttp.web should upgrade to version 3.10.11 to receive a patch.
Source	CVE (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 Package	Release	Version	Status
python-aiohttp (PTS)	bullseye	3.7.4-1	fixed
	bookworm	3.8.4-1	fixed
	sid, trixie	3.10.10-2	vulnerable

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

Package	Type	Release	Fixed Version
python-aiohttp	source	bullseye	(not affected)
python-aiohttp	source	bookworm	(not affected)
python-aiohttp	source	(unstable)	(unfixed)

Notes

[bookworm] - python-aiohttp <not-affected> (Vulnerable code not present)
[bullseye] - python-aiohttp <not-affected> (Vulnerable code not present)
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-27mf-ghqm-j3j8
Introduced with: https://github.com/aio-libs/aiohttp/commit/d664327d2cb954eb65bbd006482c815f44467986 (v3.10.6rc0)
Fixed by: https://github.com/aio-libs/aiohttp/commit/bc15db61615079d1b6327ba42c682f758fa96936 (v3.10.11)