CVE-2020-12049

medium

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

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

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

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

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

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

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

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

http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html

Details

Source: Mitre, NVD

Published: 2020-06-08

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium