1. Ubuntu Security Notices
  2. USN-5944-1

USN-5944-1: SnakeYAML vulnerabilities

Publication date

10 March 2023

Overview

Several security issues were fixed in SnakeYAML.

Releases

Packages

  • snakeyaml - YAML parser and emitter for the Java programming language

Details

It was discovered that SnakeYAML did not limit the maximal nested depth
for collections when parsing YAML data. If a user or automated system were
tricked into opening a specially crafted YAML file, an attacker could
possibly use this issue to cause applications using SnakeYAML to crash,
resulting in a denial of service. (CVE-2022-25857, CVE-2022-38749,
CVE-2022-38750)

It was discovered that SnakeYAML did not limit the maximal data matched
with regular expressions when parsing YAML data. If a user or automated
system were tricked into opening a specially crafted YAML file, an
attacker could possibly use this issue to cause applications using
SnakeYAML to crash, resulting in a denial of service. (CVE-2022-38751)

It was discovered that SnakeYAML did not limit the maximal nested depth
for collections when parsing YAML data. If a user or automated system were
tricked into opening a specially crafted YAML file, an attacker could
possibly use this issue to cause applications using SnakeYAML to crash,
resulting in a denial of service. (CVE-2022-25857, CVE-2022-38749,
CVE-2022-38750)

It was discovered that SnakeYAML did not limit the maximal data matched
with regular expressions when parsing YAML data. If a user or automated
system were tricked into opening a specially crafted YAML file, an
attacker could possibly use this issue to cause applications using
SnakeYAML to crash, resulting in a denial of service. (CVE-2022-38751)

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
22.10 kinetic libyaml-snake-java –  1.29-1ubuntu0.22.10.1
22.04 jammy libyaml-snake-java –  1.29-1ubuntu0.22.04.1
20.04 focal libyaml-snake-java –  1.25+ds-2ubuntu0.1
18.04 bionic libyaml-snake-java –  1.23-1+deb10u1build0.18.04.1
16.04 xenial libyaml-snake-java –  1.12-2ubuntu0.16.04.1~esm1  
14.04 trusty libyaml-snake-java –  1.12-2ubuntu0.14.04.1~esm1  

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References

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