Bug 1906451 (CVE-2020-29651) - CVE-2020-29651 python-py: ReDoS in the py.path.svnwc component via mailicious input to blame functionality
Summary: CVE-2020-29651 python-py: ReDoS in the py.path.svnwc component via mailicious...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2020-29651
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1906453 1906892 1910397 1910398 1910655 1914836 1914838 1914839
Blocks: 1906454
TreeView+ depends on / blocked
 
Reported: 2020-12-10 14:48 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-10-28 11:00 UTC (History)
18 users (show)

Fixed In Version: python-py 1.10.0
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Clone Of:
Environment:
Last Closed: 2021-10-28 11:00:29 UTC


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Description Guilherme de Almeida Suckevicz 2020-12-10 14:48:23 UTC
A denial of service via regular expression in the py.path.svnwc component of py (aka python-py) through 1.9.0 could be used by attackers to cause a compute-time denial of service attack by supplying malicious input to the blame functionality.

Reference:
https://github.com/pytest-dev/py/issues/256

Upstream patch:
https://github.com/pytest-dev/py/pull/257

Comment 1 Guilherme de Almeida Suckevicz 2020-12-10 14:50:11 UTC
Created python-py tracking bugs for this issue:

Affects: fedora-all [bug 1906453]

Comment 3 Przemyslaw Roguski 2020-12-11 17:06:37 UTC
External References:

https://github.com/pytest-dev/py/issues/256

Comment 4 Przemyslaw Roguski 2020-12-11 17:15:52 UTC
Upstream fixed version is not released yet, but the patch is already merged with master branch:
https://github.com/pytest-dev/py/pull/257/commits/4a9017dc6199d2a564b6e4b0aa39d6d8870e4144

Comment 6 Przemyslaw Roguski 2020-12-18 10:30:28 UTC
Upstream PR:
https://github.com/earthgecko/skyline/pull/381

Comment 11 Nick Tait 2021-02-04 22:21:59 UTC
Statement:

In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP python-py package.


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