High severity · published Feb 15, 2021
CVE-2020-35512
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…
7.8
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DB
Dbus · Freedesktop
1.12.20 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35512
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35512
Issue Tracking
https://bugs.gentoo.org/755392
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1909101
gitlab.freedesktop.org
https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
security-tracker.debian.org
https://security-tracker.debian.org/tracker/CVE-2020-35512
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