Headline
Ubuntu Security Notice USN-5944-1
Ubuntu Security Notice 5944-1 - 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. 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.
==========================================================================
Ubuntu Security Notice USN-5944-1
March 10, 2023
snakeyaml vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
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)
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.
References:
https://ubuntu.com/security/notices/USN-5944-1
CVE-2022-25857, CVE-2022-38749, CVE-2022-38750, CVE-2022-38751
Package Information:
https://launchpad.net/ubuntu/+source/snakeyaml/1.29-1ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/snakeyaml/1.29-1ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/snakeyaml/1.25+ds-2ubuntu0.1
https://launchpad.net/ubuntu/+source/snakeyaml/1.23-1+deb10u1build0.18.04.1
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Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.
Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.
Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.
Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks (DOS). If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stackoverflow.
The package org.yaml:snakeyaml from 0 and before 1.31 are vulnerable to Denial of Service (DoS) due missing to nested depth limitation for collections.