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.

INFO

Published Date :

June 8, 2020, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 4:59 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2020-12049 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-12049 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Canonical ubuntu_linux
1 Freedesktop dbus
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-12049.

URL Resource
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 Mailing List Patch Third Party Advisory
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294 Exploit 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 Third Party Advisory
https://security.gentoo.org/glsa/202007-46 Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak Exploit Third Party Advisory
https://usn.ubuntu.com/4398-1/ Third Party Advisory
https://usn.ubuntu.com/4398-2/ Third Party Advisory
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 Mailing List Patch Third Party Advisory
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294 Exploit 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 Third Party Advisory
https://security.gentoo.org/glsa/202007-46 Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak Exploit Third Party Advisory
https://usn.ubuntu.com/4398-1/ Third Party Advisory
https://usn.ubuntu.com/4398-2/ Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

asp-net-core csharp docker dockerfile javascript react webapi docker-compose

C# Dockerfile HTML JavaScript CSS

Updated: 8 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 22, 2024, 6:42 p.m. This repo has been linked 383 different CVEs too.

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 11 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.

None

Updated: 2 years, 8 months ago
1 stars 0 fork 0 watcher
Born at : June 20, 2021, 9:24 p.m. This repo has been linked 13 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-12049 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-12049 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html
    Added Reference http://www.openwall.com/lists/oss-security/2020/06/04/3
    Added Reference https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
    Added Reference https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30
    Added Reference https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18
    Added Reference https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16
    Added Reference https://security.gentoo.org/glsa/202007-46
    Added Reference https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak
    Added Reference https://usn.ubuntu.com/4398-1/
    Added Reference https://usn.ubuntu.com/4398-2/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jun. 12, 2023

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202007-46 No Types Assigned https://security.gentoo.org/glsa/202007-46 Third Party Advisory
    Changed Reference Type https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak No Types Assigned https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak Exploit, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4398-1/ No Types Assigned https://usn.ubuntu.com/4398-1/ Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4398-2/ No Types Assigned https://usn.ubuntu.com/4398-2/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:* *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:*:*:*
  • CVE Modified by [email protected]

    Feb. 22, 2021

    Action Type Old Value New Value
    Added Reference https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 27, 2020

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202007-46 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 29, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4398-2/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 29, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4398-1/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 11, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.openwall.com/lists/oss-security/2020/06/04/3 No Types Assigned http://www.openwall.com/lists/oss-security/2020/06/04/3 Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://gitlab.freedesktop.org/dbus/dbus/-/issues/294 No Types Assigned https://gitlab.freedesktop.org/dbus/dbus/-/issues/294 Exploit, Third Party Advisory
    Changed Reference Type https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30 No Types Assigned https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30 Third Party Advisory
    Changed Reference Type https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18 No Types Assigned https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18 Third Party Advisory
    Changed Reference Type https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16 No Types Assigned https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16 Third Party Advisory
    Added CWE NIST CWE-404
    Added CPE Configuration OR *cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* versions from (including) 1.3.0 up to (excluding) 1.12.18
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-12049 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-12049 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.00%

score

0.19021

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability