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Ubuntu 20.04, 18.04, 14.04: USN-6958-1 Moderate: Libcroco DoS Issues

ubuntu
Calendar Grey August 13, 2024
Dist Ubuntu Esm H88
Multiple vulnerabilities within Libcroco have been addressed for Ubuntu versions 20.04, 18.04, and 14.04. Detailed update directives are provided.
Several security issues were fixed in Libcroco.

Summary

Several security issues were fixed in Libcroco.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu heap overflow libcroco

Update Instructions

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

Ubuntu 20.04 LTS
   libcroco-tools                  0.6.13-1ubuntu0.1
   libcroco3                       0.6.13-1ubuntu0.1

Ubuntu 18.04 LTS
   libcroco-tools                  0.6.12-2ubuntu0.1~esm1
                                   Available with Ubuntu Pro
   libcroco3                       0.6.12-2ubuntu0.1~esm1
                                   Available with Ubuntu Pro

Ubuntu 14.04 LTS
   libcroco-tools                  0.6.8-2ubuntu1+esm1
                                   Available with Ubuntu Pro
   libcroco3                       0.6.8-2ubuntu1+esm1
                                   Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-6958-1

CVE-2017-7960, CVE-2017-8834, CVE-2017-8871, CVE-2020-12825

Ubuntu Security Notice USN-6958-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu heap overflow libcroco

Package Information

https://launchpad.net/ubuntu/+source/libcroco/0.6.13-1ubuntu0.1

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