CVE-2020-12049

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.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS

0.57% chance of exploitation in the next 30 days, 45th percentile

Published

2020-06-08

Updated

2024-08-04

Proof-of-concept exploits (2)

• https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
• https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak

References

• CVE Record
• NVD entry

Related

• CVE-2020-12029
• CVE-2020-12054
• CVE-2020-12028
• CVE-2020-1206
• CVE-2020-12027
• CVE-2020-12061