Ubuntu 22.10: USN-5944-1 critical: SnakeYAML Denial of Service

ubuntu

March 10, 2023

Several security issues were fixed in SnakeYAML.

Summary

Several security issues were fixed in SnakeYAML.

Software Description:

- 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)

Topics Covered

security advisory denial of service Ubuntu Java parser SnakeYAML

Update Instructions

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

Ubuntu 22.10:
   libyaml-snake-java              1.29-1ubuntu0.22.10.1

Ubuntu 22.04 LTS:
   libyaml-snake-java              1.29-1ubuntu0.22.04.1

Ubuntu 20.04 LTS:
   libyaml-snake-java              1.25+ds-2ubuntu0.1

Ubuntu 18.04 LTS:
   libyaml-snake-java              1.23-1+deb10u1build0.18.04.1

Ubuntu 16.04 ESM:
   libyaml-snake-java              1.12-2ubuntu0.16.04.1~esm1

Ubuntu 14.04 ESM:
   libyaml-snake-java              1.12-2ubuntu0.14.04.1~esm1

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