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Use After Free Affecting dbus package, versions <1.12.20-0+deb10u1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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SUSE
7 high
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Red Hat
7 high

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  • Snyk ID SNYK-DEBIAN10-DBUS-1056467
  • published 7 Jan 2021
  • disclosed 15 Feb 2021
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Introduced: 7 Jan 2021

CVE-2020-35512 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Debian:10 dbus to version 1.12.20-0+deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dbus package and not the dbus package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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