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CVE-2021-3939

HIGH

7.8

Description

Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This is reachable via the SetLanguage dbus function. This is fixed in versions 0.6.55-0ubuntu12~20.04.5, 0.6.55-0ubuntu13.3, 0.6.55-0ubuntu14.1.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published11/17/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:accountsservicecanonical:ubuntu_linux

Weaknesses (CWE)

CWE-590CWE-763

References

http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.html(security@ubuntu.com)

https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149(security@ubuntu.com)

https://ubuntu.com/security/notices/USN-5149-1(security@ubuntu.com)

http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.html(af854a3a-2127-422b-91ae-364da2661108)

https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149(af854a3a-2127-422b-91ae-364da2661108)

https://ubuntu.com/security/notices/USN-5149-1(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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