1. Ubuntu Security Notices
  2. USN-5665-1

USN-5665-1: PCRE vulnerabilities

Publication date

10 October 2022

Overview

PCRE could be made to crash if it received specially crafted input.

Releases

Packages

  • pcre3 - Perl 5 Compatible Regular Expression Library

Details

It was discovered that PCRE incorrectly handled certain regular expressions.
A remote attacker could use this issue to cause applications using PCRE to
crash, resulting in a denial of service. (CVE-2017-6004)

It was discovered that PCRE incorrectly handled certain Unicode encoding. A
remote attacker could use this issue to cause applications using PCRE to
crash, resulting in a denial of service. (CVE-2017-7186)

It was discovered that PCRE incorrectly handled certain regular expressions.
A remote attacker could use this issue to cause applications using PCRE to
crash, resulting in a denial of service. (CVE-2017-6004)

It was discovered that PCRE incorrectly handled certain Unicode encoding. A
remote attacker could use this issue to cause applications using PCRE to
crash, resulting in a denial of service. (CVE-2017-7186)

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
16.04 xenial libpcre3 –  2:8.38-3.1ubuntu0.1~esm2  

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References

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