Vulnerability Report

CVE-2020-12049

Title: Freedesktop Dbus Denial of Service (DoS)

Denial of Service (DoS)

Proof Of Concept

No public PoC currently indexed for CVE-2020-12049.

CWE Category CWE-404
Published Date Jun 08, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.5 CVSS v3.1
Exploit Probability (EPSS)
0.09%

Vulnerability Summary

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.

Impacted Vendors

F
freedesktop 1

Reference Links

http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html 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/ http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html 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/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.5
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.9
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-12049 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.