PT-2021-11780 · D-Bus+3 · D-Bus+3

Daniel Onaca · Published 2021-02-15 · Updated 2023-12-27 · CVE-2020-35512

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: D-Bus Development branch versions 1.13.16 and earlier D-Bus versions 1.12.18 and earlier D-Bus versions 1.10.30 and earlier

Description: A use-after-free flaw was found in D-Bus 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.

Recommendations: For D-Bus Development branch versions 1.13.16 and earlier, update to a version later than 1.13.16. For D-Bus versions 1.12.18 and earlier, update to a version later than 1.12.18. For D-Bus versions 1.10.30 and earlier, update to a version later than 1.10.30.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2020-35512

OESA-2021-1101

OPENSUSE-SU-2021:1056-1

OPENSUSE-SU-2021:2292-1

OPENSUSE-SU-2021_1056-1

OPENSUSE-SU-2021_2292-1

SUSE-SU-2021:2211-1

SUSE-SU-2021:2292-1

SUSE-SU-2021:2424-1

SUSE-SU-2021:2590-1

SUSE-SU-2021_2211-1

SUSE-SU-2021_2292-1

SUSE-SU-2022:2788-1

SUSE-SU-2022_2788-1

USN-5244-1

USN-5244-2

Affected Products

D-Bus

Linuxmint

Suse

Ubuntu

References · 40

• https://osv.dev/vulnerability/SUSE-SU-2021:2424-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:2292-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2292-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2590-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5244-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-35512 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-35512 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2021:1056-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-35512 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2021-1101 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2211-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-35512 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5244-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2022:2788-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5244-2 · Vendor Advisory