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7.8
CVSSv3

CVE-2021-3939

Published: 17/11/2021 Updated: 12/06/2023
CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 641
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
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Vulnerability Summary

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.

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canonical accountsservice

canonical ubuntu linux 20.04

canonical ubuntu linux 21.04

canonical ubuntu linux 21.10

References

CWE-763https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149https://ubuntu.com/security/notices/USN-5149-1http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.htmlhttps://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
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