CVE-2022-43552

Name	CVE-2022-43552
Description	A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
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-3288-1, DSA-5330-1, ELA-780-1
Debian Bugs	1026830

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
curl (PTS)	jessie, jessie (lts)	7.38.0-4+deb8u28	fixed
	stretch (security)	7.52.1-5+deb9u16	vulnerable
	stretch (lts), stretch	7.52.1-5+deb9u22	fixed
	buster, buster (lts)	7.64.0-4+deb10u10	fixed
	buster (security)	7.64.0-4+deb10u9	fixed
	bullseye	7.74.0-1.3+deb11u13	fixed
	bullseye (security)	7.74.0-1.3+deb11u14	fixed
	bookworm	7.88.1-10+deb12u8	fixed
	bookworm (security)	7.88.1-10+deb12u5	fixed
	sid, trixie	8.11.1-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
curl	source	jessie	7.38.0-4+deb8u24	ELA-780-1
curl	source	stretch	7.52.1-5+deb9u18	ELA-780-1
curl	source	buster	7.64.0-4+deb10u4	DLA-3288-1
curl	source	bullseye	7.74.0-1.3+deb11u5	DSA-5330-1
curl	source	(unstable)	7.86.0-3		1026830

Notes

https://curl.se/docs/CVE-2022-43552.html
Introduced by (telnet): https://github.com/curl/curl/commit/b7eeb6e67fca686f840eacd6b8394edb58b07482 (curl-7_16_0)
Introduced by (smb): https://github.com/curl/curl/commit/aec2e865f06669b9cb5d26cc1148d70bc418b163 (curl-7_40_0)
Fixed by: https://github.com/curl/curl/commit/4f20188ac644afe174be6005ef4f6ffba232b8b2 (curl-7_87_0)