Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS04OGN2LW1qMjQtOHczcc4AAu96

arr-pm vulnerable to arbitrary shell execution when extracting or listing files contained in a malicious rpm.

Impact

Arbitrary shell execution is possible when using RPM::File#files and RPM::File#extract if the RPM contains a malicious "payload compressor" field.

This vulnerability impacts the extract and files methods of the RPM::File class in the affected versions of this library.

Patches

Version 0.0.12 is available with a fix for these issues.

Workarounds

When using an affected version of this library (arr-pm), ensure any RPMs being processed contain valid/known payload compressor values. Such values include: gzip, bzip2, xz, zstd, and lzma.

You can check the payload compressor field in an rpm by using the rpm command line tool. For example:

% rpm -qp example-1.0-1.x86_64.rpm --qf "%{PAYLOADCOMPRESSOR}\n"
gzip

Impact on known dependent projects

This library is used by fpm. The vulnerability may impact fpm only when using the flag -s rpm or --input-type rpm to convert a malicious rpm to another format. It does not impact creating rpms.

References

• https://github.com/jordansissel/ruby-arr-pm/pull/14
• https://github.com/jordansissel/ruby-arr-pm/pull/15

Credit

Thanks to @joernchen for reporting this problem and contributing to the resolution :)

For more information

If you have any questions or comments about this advisory:

• Open an issue in the arr-pm issue tracker

Permalink: https://github.com/advisories/GHSA-88cv-mj24-8w3q
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS04OGN2LW1qMjQtOHczcc4AAu96
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: about 1 year ago

CVSS Score: 7.0
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Identifiers: GHSA-88cv-mj24-8w3q, CVE-2022-39224
References:

• https://github.com/jordansissel/ruby-arr-pm/security/advisories/GHSA-88cv-mj24-8w3q
• https://github.com/jordansissel/ruby-arr-pm/pull/14
• https://github.com/jordansissel/ruby-arr-pm/pull/15
• https://nvd.nist.gov/vuln/detail/CVE-2022-39224
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/arr-pm/CVE-2022-39224.yml
• https://github.com/advisories/GHSA-88cv-mj24-8w3q

Repository: https://github.com/jordansissel/ruby-arr-pm
Blast Radius: 21.1

Affected Packages