Bug 1934699 (CVE-2021-25292) - CVE-2021-25292 python-pillow: Regular expression DoS in PDF format parser
Summary: CVE-2021-25292 python-pillow: Regular expression DoS in PDF format parser
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-25292
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1934700 1934701 1934702 1934703 1935584 1939589 1939590
Blocks: 1934710
TreeView+ depends on / blocked
 
Reported: 2021-03-03 17:11 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-11-09 17:24 UTC (History)
12 users (show)

Fixed In Version: python-pillow 8.1.1
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in python-pillow. The PDF parser has a catastrophic backtracking regex that could be used as a DOS attack.
Clone Of:
Environment:
Last Closed: 2021-10-19 14:08:58 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3917 0 None None None 2021-10-19 12:11:01 UTC
Red Hat Product Errata RHSA-2021:4149 0 None None None 2021-11-09 17:24:25 UTC

Description Guilherme de Almeida Suckevicz 2021-03-03 17:11:33 UTC 
The PDF parser has a catastrophic backtracking regex that could be used as a DOS attack.

Reference:
https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html
Comment 1 Guilherme de Almeida Suckevicz 2021-03-03 17:12:52 UTC 
Created mingw-python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1934702]


Created python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1934700]


Created python2-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1934701]


Created python3-pillow tracking bugs for this issue:

Affects: epel-7 [bug 1934703]
Comment 3 Jason Shepherd 2021-03-08 03:02:59 UTC 
Mitigation:

Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.
Comment 5 Riccardo Schirone 2021-03-16 16:30:57 UTC 
Upstream patch:
https://github.com/python-pillow/Pillow/commit/3bce145966374dd39ce58a6fc0083f8d1890719c
Comment 7 Lumír Balhar 2021-04-08 15:20:31 UTC 
Upstream does not have an example of the crafted pdf file to reproduce the issue. Do you plan to create a reproducer?
Comment 8 Lumír Balhar 2021-04-09 13:42:37 UTC 
See a new upstream test: https://github.com/python-pillow/Pillow/pull/5393/files
Comment 9 errata-xmlrpc 2021-10-19 12:10:59 UTC 
This issue has been addressed in the following products:

  Red Hat Quay 3

Via RHSA-2021:3917 https://access.redhat.com/errata/RHSA-2021:3917
Comment 10 Product Security DevOps Team 2021-10-19 14:08:58 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-25292
Comment 11 errata-xmlrpc 2021-11-09 17:24:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4149 https://access.redhat.com/errata/RHSA-2021:4149
Note You need to log in before you can comment on or make changes to this bug.