CVE-2020-12049

Name	CVE-2020-12049
Description	An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
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-2235-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
dbus (PTS)	bullseye	1.12.28-0+deb11u1	fixed
	bullseye (security)	1.12.24-0+deb11u1	fixed
	bookworm	1.14.10-1~deb12u1	fixed
	sid, trixie	1.16.0-1	fixed

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

Package	Type	Release	Fixed Version	Origin
dbus	source	jessie	1.8.22-0+deb8u3	DLA-2235-1
dbus	source	stretch	1.10.32-0+deb9u1
dbus	source	buster	1.12.20-0+deb10u1
dbus	source	(unstable)	1.12.18-1

Notes

https://www.openwall.com/lists/oss-security/2020/06/04/3
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
Fixed by: https://gitlab.freedesktop.org/dbus/dbus/-/commit/272d484283883fa9ff95b69d924fff6cd34842f5
Test: https://gitlab.freedesktop.org/dbus/dbus/-/commit/8bc1381819e5a845331650bfa28dacf6d2ac1748