USN-5149-1: AccountsService vulnerability

Releases

• Ubuntu 21.10
• Ubuntu 21.04
• Ubuntu 20.04 LTS

Packages

• accountsservice - query and manipulate user account information

Details

Kevin Backhouse discovered that AccountsService incorrectly handled memory
when performing certain language setting operations. A local attacker could
use this issue to escalate privileges.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10

• accountsservice - 0.6.55-0ubuntu14.1
• libaccountsservice0 - 0.6.55-0ubuntu14.1

Ubuntu 21.04

• accountsservice - 0.6.55-0ubuntu13.3
• libaccountsservice0 - 0.6.55-0ubuntu13.3

Ubuntu 20.04

• accountsservice - 0.6.55-0ubuntu12~20.04.5
• libaccountsservice0 - 0.6.55-0ubuntu12~20.04.5

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• CVE-2021-3939