CVE-2021-3939 - CVE House
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Status published High CVE-2021-3939

Free of static data in accountsservice

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Kevin Backhouse

References

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Affected Vendor

Affected Software

accountsservice
Vulnerable Versions:
0.6.55-0ubuntu12~20.04, 0.6.55-0ubuntu13, 0.6.55-0ubuntu14

Timeline

Official Publish: November 17th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

CWE-590

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.