CVE-2022-39224: Arbitrary shell execution when extracting or listing files contained in a malicious rpm.

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-09-21 · updated 2026-06-17
Weakness: CWE-78

Description

Arr-pm is an RPM reader/writer library written in Ruby. Versions prior to 0.0.12 are subject to OS command injection resulting in shell execution if the RPM contains a malicious "payload compressor" field. This vulnerability impacts the `extract` and `files` methods of the `RPM::File` class of this library. Version 0.0.12 patches these issues. A workaround for this issue is to ensure any RPMs being processed contain valid/known payload compressor values such as gzip, bzip2, xz, zstd, and lzma. The payload compressor field in an rpm can be checked by using the rpm command line tool.

Affected products

jordansissel ruby-arr-pm: before 0.0.12 — fixed in 0.0.12

How to fix

Upgrade to a fixed version: jordansissel ruby-arr-pm 0.0.12. Check the vendor advisory for mitigations.

References

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