Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13NTk2LTR3dngtajlqNs4AAvXY

ReDoS in py library when used with subversion

The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS (Regular expression Denial of Service) attack via a Subversion repository with crafted info data, because the InfoSvnCommand argument is mishandled.

The particular codepath in question is the regular expression at py._path.svnurl.InfoSvnCommand.lspattern and is only relevant when dealing with subversion (svn) projects. Notably the codepath is not used in the popular pytest project. The developers of the pytest package have released version 7.2.0 which removes their dependency on py. Users of pytest seeing alerts relating to this advisory may update to version 7.2.0 of pytest to resolve this issue. See https://github.com/pytest-dev/py/issues/287#issuecomment-1290407715 for additional context.

Permalink: https://github.com/advisories/GHSA-w596-4wvx-j9j6
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13NTk2LTR3dngtajlqNs4AAvXY
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 1 year ago
Updated: 9 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-w596-4wvx-j9j6, CVE-2022-42969
References:

• https://nvd.nist.gov/vuln/detail/CVE-2022-42969
• https://github.com/pytest-dev/py/issues/287
• https://github.com/pytest-dev/py/blob/cb87a83960523a2367d0f19226a73aed4ce4291d/py/_path/svnurl.py#L316
• https://github.com/pytest-dev/py/issues/288
• https://github.com/pytest-dev/pytest/issues/10392
• https://news.ycombinator.com/item?id=34163710
• https://pypi.org/project/py
• https://github.com/advisories/GHSA-w596-4wvx-j9j6

Repository: https://github.com/pytest-dev/py
Blast Radius: 38.4

Affected Packages