Vulnerability Details : 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.
Products affected by CVE-2020-12049
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:*
- cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*
Threat overview for CVE-2020-12049
Top countries where our scanners detected CVE-2020-12049
Top open port discovered on systems with this issue
80
IPs affected by CVE-2020-12049 953
Threat actors abusing to this issue?
Yes
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affected by CVE-2020-12049!
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Exploit prediction scoring system (EPSS) score for CVE-2020-12049
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-12049
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST | |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-12049
-
The product does not release or incorrectly releases a resource before it is made available for re-use.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-12049
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https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16
dbus-1.13.16 · Tags · dbus / dbus · GitLabThird Party Advisory
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https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak
GHSL-2020-057: dbus file descriptor leak (DoS) - CVE-2020-12049 - GitHub Security LabExploit;Third Party Advisory
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https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
CVE-2020-12049: File descriptor leak in _dbus_read_socket_with_unix_fds (#294) · Issues · dbus / dbus · GitLabExploit;Third Party Advisory
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https://usn.ubuntu.com/4398-1/
USN-4398-1: DBus vulnerability | Ubuntu security noticesThird Party Advisory
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https://security.gentoo.org/glsa/202007-46
D-Bus: Denial of service (GLSA 202007-46) — Gentoo securityThird Party Advisory
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http://www.openwall.com/lists/oss-security/2020/06/04/3
oss-security - CVE-2020-12049: dbus: denial of service via file descriptor leakMailing List;Patch;Third Party Advisory
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https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18
dbus-1.12.18 · Tags · dbus / dbus · GitLabThird Party Advisory
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http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html
D-Bus File Descriptor Leak Denial Of Service ≈ Packet Storm
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https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30
dbus-1.10.30 · Tags · dbus / dbus · GitLabThird Party Advisory
-
https://usn.ubuntu.com/4398-2/
USN-4398-2: DBus vulnerability | Ubuntu security noticesThird Party Advisory
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