7.8

CVE-2020-35512: freedesktop dbus Use After Free

CVSS: 7.8v3.1HighModified
AliasesSUSE-SU-2021:2211-1SUSE-SU-2021:2292-1SUSE-SU-2022:2788-1
Published 15-02-2021Last modified 19-11-2024
Open JSON

Vulnerability summary

CVE-2020-35512 is a high (CVSS 7.8) Use After Free vulnerability in freedesktop dbus. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 24.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.33%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-2021:2424-1SUSE-SU-2021:2590-1

Timeline

  1. 15-02-2021
    PublishedVulnerability first disclosed.
  2. 19-11-2024
    Last modifiedVulnerability information updated.

Description

A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

25%

Versus all other CVEs

30-day change

0.00 pp

From 0.33% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.33%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse33 products
  • dbus-1-x11&distro=SUSE Enterprise Storage 6< 1.12.2-8.6.1
  • dbus-1-x11&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 1.12.2-8.6.1
  • dbus-1-x11&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 1.12.2-8.6.1
  • dbus-1-x11&distro=SUSE Linux Enterprise High Performance Computing 15-ESPOS< 1.12.2-3.11.1
  • dbus-1-x11&distro=SUSE Linux Enterprise High Performance Computing 15-LTSS< 1.12.2-3.11.1
Opensuse4 products
  • dbus-1-x11&distro=openSUSE Leap 15.2< 1.12.2-lp152.6.3.1
  • dbus-1-x11&distro=openSUSE Leap 15.3< 1.12.2-8.6.1
  • dbus-1&distro=openSUSE Leap 15.2< 1.12.2-lp152.6.3.1
  • dbus-1&distro=openSUSE Leap 15.3< 1.12.2-8.6.1
Debian1 product
  • dbus< 1.12.20-1
Freedesktop1 product
Ubuntu1 product
  • dbusAll versions (No fix recorded) | < 1.10.6-1ubuntu3.6+esm1 | < 1.12.2-1ubuntu1.3 | < 1.12.16-2ubuntu2.2

5 vendors · 40 products

References

19 links
Show all 19 references