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Ubuntu 22.04 LTS: USN-5689-1 Critical: Perl Signature Bypass Exploit

ubuntu
Calendar Grey October 19, 2022
Dist Ubuntu Esm H88
Investigate the significant vulnerability impacting various releases of Ubuntu, stemming from the Oversight in Perl's signature verification process.
Perl could be made to by pass signature verification.

Summary

Perl could be made to by pass signature verification.

Software Description:

- perl: Practical Extraction and Report Language

Details:

It was discovered that Perl incorrectly handled certain signature verification.

An remote attacker could possibly use this issue to bypass signature verification.

Topics%20covered

Topics Covered

security advisory remote exploit critical vulnerability perl ubuntu signature bypass

Update Instructions

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

Ubuntu 22.04 LTS:
  perl                            5.34.0-3ubuntu1.1

Ubuntu 20.04 LTS:
  perl                            5.30.0-9ubuntu0.3

Ubuntu 18.04 LTS:
  perl                            5.26.1-6ubuntu0.6

Ubuntu 16.04 ESM:
  perl                            5.22.1-9ubuntu0.9+esm1

Ubuntu 14.04 ESM:
  perl                            5.18.2-2ubuntu1.7+esm4

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

References

https://ubuntu.com/security/notices/USN-5689-1

CVE-2020-16156

Severity
critical
Lowest
Low
Medium
High
Critical

October 19, 2022

Topics%20covered

Topics Covered

security advisory remote exploit critical vulnerability perl ubuntu signature bypass

Package Information

https://launchpad.net/ubuntu/+source/perl/5.34.0-3ubuntu1.1
https://launchpad.net/ubuntu/+source/perl/5.30.0-9ubuntu0.3

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