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.

References

http://www.openwall.com/lists/oss-security/2020/06/04/3

https://gitlab.freedesktop.org/dbus/dbus/-/issues/294

https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30

https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18

https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16

https://security.gentoo.org/glsa/202007-46

https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak

https://usn.ubuntu.com/4398-1/

https://usn.ubuntu.com/4398-2/

Details

Risk Information

CVSS v2

CVSS v3