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Ubuntu Security Notice USN-6361-2
September 26, 2023

cups vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

CUPS could be made to expose sensitive information.

Software Description:
- cups: Common UNIX Printing System(tm)

Details:

USN-6361-1 fixed a vulnerability in CUPS. This update provides the
corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

  It was discovered that CUPS incorrectly authenticated certain remote
  requests. A remote attacker could possibly use this issue to obtain
  recently printed documents.

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   cups                            2.2.7-1ubuntu2.10+esm3

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   cups                            2.1.3-4ubuntu0.11+esm5

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

References:
   https://ubuntu.com/security/notices/USN-6361-2
   https://ubuntu.com/security/notices/USN-6361-1
   CVE-2023-32360