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==========================================================================
Ubuntu Security Notice USN-5454-2
May 31, 2022

cups vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in CUPS.

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

Details:

USN-5454-1 fixed several vulnerabilities in CUPS. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

 Joshua Mason discovered that CUPS incorrectly handled the secret key used
 to access the administrative web interface. A remote attacker could
 possibly use this issue to open a session as an administrator and execute
 arbitrary code. (CVE-2022-26691)

 It was discovered that CUPS incorrectly handled certain memory operations
 when handling IPP printing. A remote attacker could possibly use this issue
 to cause CUPS to crash, leading to a denial of service, or obtain sensitive
 information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04
 LTS.  (CVE-2019-8842, CVE-2020-10001)

Update instructions:

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

Ubuntu 16.04 ESM:
  cups                            2.1.3-4ubuntu0.11+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5454-2
  https://ubuntu.com/security/notices/USN-5454-1
  CVE-2019-8842, CVE-2020-10001, CVE-2022-26691

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