1. Ubuntu Security Notices
  2. USN-4602-1

USN-4602-1: Perl vulnerabilities

Publication date

26 October 2020

Overview

Several security issues were fixed in Perl.

Releases

Packages

  • perl - Practical Extraction and Report Language

Details

ManhND discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2020-10543)

Hugo van der Sanden and Slaven Rezic discovered that Perl incorrectly
handled certain regular expressions. In environments where untrusted
regular expressions are evaluated, a remote attacker could possibly use
this issue to cause Perl to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2020-10878)

Sergey Aleynikov discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl...

ManhND discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2020-10543)

Hugo van der Sanden and Slaven Rezic discovered that Perl incorrectly
handled certain regular expressions. In environments where untrusted
regular expressions are evaluated, a remote attacker could possibly use
this issue to cause Perl to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2020-10878)

Sergey Aleynikov discovered that Perl incorrectly handled certain regular
expressions. In environments where untrusted regular expressions are
evaluated, a remote attacker could possibly use this issue to cause Perl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2020-12723)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal perl –  5.30.0-9ubuntu0.2
18.04 bionic perl –  5.26.1-6ubuntu0.5
16.04 xenial perl –  5.22.1-9ubuntu0.9

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References

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