CVE-2023-23916

Name	CVE-2023-23916
Description	An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3341-1, DSA-5365-1
Debian Bugs	1031371

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
curl (PTS)	buster	7.64.0-4+deb10u2	vulnerable
	buster (security)	7.64.0-4+deb10u9	fixed
	bullseye (security), bullseye	7.74.0-1.3+deb11u11	fixed
	bookworm, bookworm (security)	7.88.1-10+deb12u5	fixed
	trixie	8.5.0-2	fixed
	sid	8.7.1-2	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
curl	source	buster	7.64.0-4+deb10u5	DLA-3341-1
curl	source	bullseye	7.74.0-1.3+deb11u7	DSA-5365-1
curl	source	(unstable)	7.88.1-1		1031371

Notes

https://curl.se/docs/CVE-2023-23916.html
Introduced by: https://github.com/curl/curl/commit/dbcced8e32b50c068ac297106f0502ee200a1ebd (curl-7_57_0)
Fixed by: https://github.com/curl/curl/commit/119fb187192a9ea13dc90d9d20c215fc82799ab9 (curl-7_88_0)