CVE-2021-3939

CWE-590CWE-7636 documents6 sources
Severity
7.8HIGH
EPSS
0.1%
top 68.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Ubuntu AccountsserviceCanonical AccountsserviceCanonical Ubuntu Linux
Timeline
PublishedNov 17
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 1.1 | Impact: 6.0

Affected Packages3 packages

▶CVEListV5ubuntu/accountsservice0.6.55-0ubuntu12~20.04 — 0.6.55-0ubuntu12~20.04.5+2
▶NVDcanonical/accountsservice0.6.55-0ubuntu12\~20.04 — 0.6.55-0ubuntu12\~20.05+2
▶Ubuntuaccountsservice< 0.6.55-0ubuntu12~20.04.5+1

Also affects: Ubuntu Linux 20.04, 21.04, 21.10

🔴Vulnerability Details

3
GHSA
GHSA-jxh7-q7rm-43ww: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language↗2022-05-24
▶
CVEList
Free of static data in accountsservice↗2021-11-17
▶
OSV
CVE-2021-3939: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language↗2021-11-16
▶

📋Vendor Advisories

2
Ubuntu
AccountsService vulnerability↗2021-11-16
▶
Debian
CVE-2021-3939: accountsservice - Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0...↗2021
▶