USN-6569-1: libclamunrar vulnerabilities

Releases

• Ubuntu 23.10
• Ubuntu 23.04
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• libclamunrar - anti-virus utility for Unix - unrar support

Details

it was discovered that libclamunrar incorrectly handled directories when
extracting RAR archives. A remote attacker could possibly use this issue to
overwrite arbitrary files and execute arbitrary code. This issue only
affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.04.
(CVE-2022-30333)

It was discovered that libclamunrar incorrectly validated certain
structures when extracting RAR archives. A remote attacker could possibly
use this issue to execute arbitrary code. (CVE-2023-40477)

Update instructions

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

Ubuntu 23.10

• libclamunrar11 - 1.0.4-0ubuntu0.23.10.1

Ubuntu 23.04

• libclamunrar9 - 0.103.11-0ubuntu0.23.04.1

Ubuntu 22.04

• libclamunrar9 - 0.103.11-0ubuntu0.22.04.1

Ubuntu 20.04

• libclamunrar9 - 0.103.11-0ubuntu0.20.04.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

• CVE-2022-30333
• CVE-2023-40477