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Ubuntu 16.04 ESM: 5503-2 Critical: GnuPG Forged Signatures Threat

ubuntu
Calendar Grey July 12, 2022
Dist Ubuntu Esm H88
Critical GnuPG flaws impact Ubuntu 14.04 and 16.04. Perform system updates to resolve issues with fake signatures.
GnuPG could allow forged signatures.

Summary

GnuPG could allow forged signatures.

Software Description:

- gnupg: GNU privacy guard - a free PGP replacement

- gnupg2: GNU privacy guard - a free PGP replacement

Details:

USN-5503-1 fixed a vulnerability in GnuPG. This update provides

the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Demi Marie Obenour discovered that GnuPG incorrectly handled injection in

the status message. A remote attacker could possibly use this issue to

forge signatures.

Update Instructions

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

Ubuntu 16.04 ESM:
  gnupg                           1.4.20-1ubuntu3.3+esm2
  gnupg2                          2.1.11-6ubuntu2.1+esm1

Ubuntu 14.04 ESM:
  gnupg                           1.4.16-1ubuntu2.6+esm1

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

References

https://ubuntu.com/security/notices/USN-5503-1

CVE-2022-34903

Severity
critical
Lowest
Low
Medium
High
Critical

July 12, 2022

Package Information

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