CVE-2021-3939
published 2021-11-17CVE-2021-3939: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static…
PriorityP337high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.35%
27.0th percentile
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
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | accountsservice | >= 0 < 0.6.55-0ubuntu12~20.04.5 | 0.6.55-0ubuntu12~20.04.5 |
| canonical | accountsservice | >= 0 < 0.6.55-3ubuntu2 | 0.6.55-3ubuntu2 |
| canonical | accountsservice | >= 0.6.55-0ubuntu12\~20.04 < 0.6.55-0ubuntu12\~20.05 | 0.6.55-0ubuntu12\~20.05 |
| canonical | accountsservice | >= 0.6.55-0ubuntu13 < 0.6.55-0ubuntu13.3 | 0.6.55-0ubuntu13.3 |
| canonical | accountsservice | >= 0.6.55-0ubuntu14 < 0.6.55-0ubuntu14.1 | 0.6.55-0ubuntu14.1 |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | accountsservice | — | — |
| ubuntu | accountsservice | >= 0.6.55-0ubuntu12~20.04 < 0.6.55-0ubuntu12~20.04.5 | 0.6.55-0ubuntu12~20.04.5 |
| ubuntu | accountsservice | >= 0.6.55-0ubuntu13 < 0.6.55-0ubuntu13.3 | 0.6.55-0ubuntu13.3 |
| ubuntu | accountsservice | >= 0.6.55-0ubuntu14 < 0.6.55-0ubuntu14.1 | 0.6.55-0ubuntu14.1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8LOW
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GHSA
GHSA-jxh7-q7rm-43ww: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language
ghsa_unreviewed·2022-05-24
CVE-2021-3939 [HIGH] CWE-590 GHSA-jxh7-q7rm-43ww: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language
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.
OSV
CVE-2021-3939: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language
osv·2021-11-16·CVSS 7.8
CVE-2021-3939 [HIGH] CVE-2021-3939: Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language
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.
Ubuntu
AccountsService vulnerability
vendor_ubuntu·2021-11-16
CVE-2021-3939 AccountsService vulnerability
Title: AccountsService vulnerability
Summary: AccountsService could be made to crash or run programs as an administrator
if it received a specially crafted command.
Kevin Backhouse discovered that AccountsService incorrectly handled memory
when performing certain language setting operations. A local attacker could
use this issue to escalate privileges.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Debian
CVE-2021-3939: accountsservice - Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0...
vendor_debian·2021·CVSS 7.8
CVE-2021-3939 [HIGH] CVE-2021-3939: accountsservice - Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-Corruption.htmlhttps://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://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149https://ubuntu.com/security/notices/USN-5149-1
2021-11-17
Published