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Medium severity · published Jun 8, 2020
CVE-2020-12049
An issue was discovered in dbus >= 1.3.0 before 1.12.18
5.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DB
Dbus · Freedesktop
1.3.0 before 1.12.18 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04; 19.10; 20.04 · source: NVD
Affected product
UL
Ubuntu Linux
Canonical
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12049
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12049
packetstormsecurity.com
http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html
Mailing List
http://www.openwall.com/lists/oss-security/2020/06/04/3
Exploit
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
Third Party Advisory
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30
Third Party Advisory
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18
Third Party Advisory
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16
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