| 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 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| dbus (PTS) | jessie, jessie (lts) | 1.8.22-0+deb8u5 | fixed |
| stretch (security) | 1.10.28-0+deb9u1 | vulnerable | |
| stretch (lts), stretch | 1.10.32-0+deb9u3 | fixed | |
| buster (security), buster, buster (lts) | 1.12.28-0+deb10u1 | fixed | |
| bullseye | 1.12.28-0+deb11u1 | fixed | |
| bullseye (security) | 1.12.24-0+deb11u1 | fixed | |
| bookworm | 1.14.10-1~deb12u1 | fixed | |
| sid, trixie | 1.14.10-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| dbus | source | wheezy | (unfixed) | end-of-life | ||
| 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 |
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