CVE-2022-3996

Name	CVE-2022-3996
Description	If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. Update (31 March 2023): The description of the policy processing enablement was corrected based on CVE-2023-0466.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1027102

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openssl (PTS)	bullseye	1.1.1w-0+deb11u1	fixed
	bullseye (security)	1.1.1w-0+deb11u4	fixed
	bookworm	3.0.17-1~deb12u2	fixed
	bookworm (security)	3.0.17-1~deb12u3	fixed
	trixie	3.5.1-1	fixed
	trixie (security)	3.5.1-1+deb13u1	fixed
	forky, sid	3.5.4-1	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
openssl	source	buster	(not affected)
openssl	source	bullseye	(not affected)
openssl	source	(unstable)	3.0.7-2	1027102

Notes

[bullseye] - openssl <not-affected> (Only affects 3.0.x)
[buster] - openssl <not-affected> (Only affects 3.0.x)
https://www.openssl.org/news/secadv/20221213.txt
https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=7725e7bfe6f2ce8146b6552b44e0d226be7638e7