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Ubuntu 22.04 LTS: USN-5425-1 Moderate: PCRE Memory Handling

ubuntu
Calendar Grey May 17, 2022
Dist Ubuntu Esm H88
Numerous vulnerabilities addressed in PCRE across Ubuntu versions 14.04 to 22.04; further information on impacted releases and procedures for updating.
Several security issues were fixed in PCRE.

Summary

Several security issues were fixed in PCRE.

Software Description:

- pcre3: Perl 5 Compatible Regular Expression Library

Details:

Yunho Kim discovered that PCRE incorrectly handled memory when

handling certain regular expressions. An attacker could possibly use

this issue to cause applications using PCRE to expose sensitive

information. This issue only affects Ubuntu 18.04 LTS,

Ubuntu 20.04 LTS, Ubuntu 21.10 and Ubuntu 22.04 LTS. (CVE-2019-20838)

It was discovered that PCRE incorrectly handled memory when

handling certain regular expressions. An attacker could possibly use

this issue to cause applications using PCRE to have unexpected

behavior. This issue only affects Ubuntu 14.04 ESM, Ubuntu 16.04 ESM,

Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-14155)

Topics%20covered

Topics Covered

security advisory moderate ubuntu memory handling pcre

Update Instructions

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

Ubuntu 22.04 LTS:
   libpcre3                        2:8.39-13ubuntu0.22.04.1

Ubuntu 21.10:
   libpcre3                        2:8.39-13ubuntu0.21.10.1

Ubuntu 20.04 LTS:
   libpcre3                        2:8.39-12ubuntu0.1

Ubuntu 18.04 LTS:
   libpcre3                        2:8.39-9ubuntu0.1

Ubuntu 16.04 ESM:
   libpcre3                        2:8.38-3.1ubuntu0.1~esm1

Ubuntu 14.04 ESM:
   libpcre3                        1:8.31-2ubuntu2.3+esm1

After a standard system update you need to restart applications using PCRE,
such as the Apache HTTP server and Nginx, to make all the necessary
changes.

References

  https://ubuntu.com/security/notices/USN-5425-1

  CVE-2019-20838, CVE-2020-14155

May 17, 2022

Topics%20covered

Topics Covered

security advisory moderate ubuntu memory handling pcre

Package Information

https://launchpad.net/ubuntu/+source/pcre3/2:8.39-13ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/pcre3/2:8.39-13ubuntu0.21.10.1
  https://launchpad.net/ubuntu/+source/pcre3/2:8.39-12ubuntu0.1
  https://launchpad.net/ubuntu/+source/pcre3/2:8.39-9ubuntu0.1

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