USN-4921-1: libcaca vulnerability

Details

It was discovered that libcaca incorrectly handled certain images.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions

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

Ubuntu 20.10

• caca-utils - 0.99.beta19-2.1ubuntu1.20.10.1
• libcaca0 - 0.99.beta19-2.1ubuntu1.20.10.1

Ubuntu 20.04

• caca-utils - 0.99.beta19-2.1ubuntu1.20.04.1
• libcaca0 - 0.99.beta19-2.1ubuntu1.20.04.1

Ubuntu 18.04

• caca-utils - 0.99.beta19-2ubuntu0.18.04.2
• libcaca0 - 0.99.beta19-2ubuntu0.18.04.2

Ubuntu 16.04

• caca-utils - 0.99.beta19-2ubuntu0.16.04.2
• libcaca0 - 0.99.beta19-2ubuntu0.16.04.2

Ubuntu 14.04

• caca-utils - 0.99.beta18-1ubuntu5.1+esm1
  Available with UA Infra or UA Desktop
• libcaca0 - 0.99.beta18-1ubuntu5.1+esm1
  Available with UA Infra or UA Desktop

In general, a standard system update will make all the necessary changes.

References

• CVE-2021-3410