CVE-2022-42898

Name	CVE-2022-42898
Description	PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
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-3206-1, DLA-3213-1, DSA-5286-1, DSA-5287-1, ELA-753-1, ELA-795-1, ELA-797-1
Debian Bugs	1024187, 1024267

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
heimdal (PTS)	jessie, jessie (lts)	1.6~rc2+dfsg-9+deb8u3	fixed
	stretch (security)	7.1.0+dfsg-13+deb9u3	vulnerable
	stretch (lts), stretch	7.1.0+dfsg-13+deb9u4	fixed
	buster (security), buster, buster (lts)	7.5.0+dfsg-3+deb10u2	fixed
	bullseye (security), bullseye	7.7.0+dfsg-2+deb11u3	fixed
	bookworm	7.8.git20221117.28daf24+dfsg-2	fixed
	sid, trixie	7.8.git20221117.28daf24+dfsg-8	fixed
krb5 (PTS)	jessie, jessie (lts)	1.12.1+dfsg-19+deb8u9	fixed
	stretch (security)	1.15-1+deb9u3	vulnerable
	stretch (lts), stretch	1.15-1+deb9u6	fixed
	buster, buster (lts)	1.17-3+deb10u7	fixed
	buster (security)	1.17-3+deb10u6	fixed
	bullseye (security), bullseye	1.18.3-6+deb11u5	fixed
	bookworm (security), bookworm	1.20.1-2+deb12u2	fixed
	sid, trixie	1.21.3-3	fixed
samba (PTS)	jessie, jessie (lts)	2:4.2.14+dfsg-0+deb8u16	vulnerable
	stretch (security)	2:4.5.16+dfsg-1+deb9u4	vulnerable
	stretch (lts), stretch	2:4.5.16+dfsg-1+deb9u5	vulnerable
	buster (security), buster, buster (lts)	2:4.9.5+dfsg-5+deb10u5	vulnerable
	bullseye (security), bullseye	2:4.13.13+dfsg-1~deb11u6	vulnerable
	bookworm (security), bookworm	2:4.17.12+dfsg-0+deb12u1	fixed
	trixie	2:4.21.2+dfsg-3	fixed
	sid	2:4.21.2+dfsg-4	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
heimdal	source	jessie	1.6~rc2+dfsg-9+deb8u3	ELA-797-1
heimdal	source	stretch	7.1.0+dfsg-13+deb9u4	ELA-795-1
heimdal	source	buster	7.5.0+dfsg-3+deb10u1	DLA-3206-1
heimdal	source	bullseye	7.7.0+dfsg-2+deb11u2	DSA-5287-1
heimdal	source	(unstable)	7.8.git20221115.a6cf945+dfsg-1		1024187
krb5	source	jessie	1.12.1+dfsg-19+deb8u7	ELA-753-1
krb5	source	stretch	1.15-1+deb9u4	ELA-753-1
krb5	source	buster	1.17-3+deb10u5	DLA-3213-1
krb5	source	bullseye	1.18.3-6+deb11u3	DSA-5286-1
krb5	source	(unstable)	1.20.1-1		1024267
samba	source	(unstable)	2:4.17.3+dfsg-1

Notes

[bullseye] - samba <ignored> (Domain controller functionality is EOLed, see DSA DSA-5477-1)
[buster] - samba <ignored> (Domain controller functionality is EOLed, see DSA-5015-1)
https://www.samba.org/samba/security/CVE-2022-42898.html
https://bugzilla.samba.org/show_bug.cgi?id=15203
samba: only exploitable in 32-bit systems, according to upstream advisory
MIT-krb5: https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583 (master)
MIT-krb5: https://github.com/krb5/krb5/commit/b99de751dd35360c0fccac74a40f4a60dbf1ceea (krb5-1.20.1-final)
MIT-krb5: https://github.com/krb5/krb5/commit/4e661f0085ec5f969c76c0896a34322c6c432de4 (krb5-1.19.4-final)
https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
Heimdal: https://github.com/heimdal/heimdal/commit/0c56257bdac80da015878fffdb0f8a42b8d73246 (heimdal-7.7.1)
Heimdal regression: https://github.com/heimdal/heimdal/pull/1025
possible samba 4.13,4.15 regression: https://bugzilla.samba.org/show_bug.cgi?id=15243
and https://bugs.launchpad.net/ubuntu/+source/samba/+bug/2003867
[stretch] - samba <ignored> (Domain controller functionality is EOLed)
[jessie] - samba <ignored> (Domain controller functionality is EOLed)