Vulnerability · Published Sep 21, 2022 · Assigned by GitHub_M

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

High 7.0

In plain English

A high-severity OS command injection in ruby-arr-pm from jordansissel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.0High

Exploit odds (30 days)1.5%top 26.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
RubyGems	arr-pm	0.0.12	GHSA-88cv-mj24-8w3q

Affected products (as reported)

Vendor	Product	Versions
jordansissel	ruby-arr-pm	< 0.0.12

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://github.com/jordansissel/ruby-arr-pm/security/advisories/GHSA-88cv-mj24-8w3q x_refsource_CONFIRM
https://github.com/jordansissel/ruby-arr-pm/pull/15 x_refsource_MISC
https://github.com/jordansissel/ruby-arr-pm/pull/14 x_refsource_MISC