CVE-2021-3939
7.8
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Ubuntu | accountsservice | 0.6.55-0ubuntu12~20.04 < 0.6.55-0ubuntu12~20.04.5 | affected |
| Ubuntu | accountsservice | 0.6.55-0ubuntu13 < 0.6.55-0ubuntu13.3 | affected |
| Ubuntu | accountsservice | 0.6.55-0ubuntu14 < 0.6.55-0ubuntu14.1 | affected |
Weaknesses
- CWE-590: CWE-590 Free of Memory not on the Heap
ADP Enrichment
CVE Program Container
Additional References
- https://ubuntu.com/security/notices/USN-5149-1
- https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149
- http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.html
References
- https://ubuntu.com/security/notices/USN-5149-1
- https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149
- http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.html
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