1. Ubuntu Security Notices
  2. USN-6958-1

USN-6958-1: Libcroco vulnerabilities

Publication date

13 August 2024

Overview

Several security issues were fixed in Libcroco.

Releases

Packages

  • libcroco - Cascading Style Sheet (CSS) parsing and manipulation toolkit

Details

It was discovered that Libcroco was incorrectly accessing data structures
when reading bytes from memory, which could cause a heap buffer overflow.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS. (CVE-2017-7960)

It was discovered that Libcroco was incorrectly handling invalid UTF-8
values when processing CSS files. An attacker could possibly use this
issue to cause a denial of service. (CVE-2017-8834, CVE-2017-8871)

It was discovered that Libcroco was incorrectly implementing recursion in
one of its parsing functions, which could cause an infinite recursion
loop and a stack overflow due to stack consumption. An attacker could
possibly use this issue to cause a denial of service. (CVE-2020-12825)

It was discovered that Libcroco was incorrectly accessing data structures
when reading bytes from memory, which could cause a heap buffer overflow.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS. (CVE-2017-7960)

It was discovered that Libcroco was incorrectly handling invalid UTF-8
values when processing CSS files. An attacker could possibly use this
issue to cause a denial of service. (CVE-2017-8834, CVE-2017-8871)

It was discovered that Libcroco was incorrectly implementing recursion in
one of its parsing functions, which could cause an infinite recursion
loop and a stack overflow due to stack consumption. An attacker could
possibly use this issue to cause a denial of service. (CVE-2020-12825)

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 libcroco-tools –  0.6.13-1ubuntu0.1
libcroco3 –  0.6.13-1ubuntu0.1
18.04 bionic libcroco-tools –  0.6.12-2ubuntu0.1~esm1  
libcroco3 –  0.6.12-2ubuntu0.1~esm1  
14.04 trusty libcroco-tools –  0.6.8-2ubuntu1+esm1  
libcroco3 –  0.6.8-2ubuntu1+esm1  

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References

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