Bug 1958263 (CVE-2021-28678) - CVE-2021-28678 python-pillow: Excessive looping in BLP image reader
Summary: CVE-2021-28678 python-pillow: Excessive looping in BLP image reader
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-28678
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: 1958264 1958265 1958266 1958267 1959683 1962543 1962545
Blocks: 1958269
TreeView+ depends on / blocked
 
Reported: 2021-05-07 14:12 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-11-09 18:52 UTC (History)
11 users (show)

Fixed In Version: python-pillow-8.2.0
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in python-pillow. BlpImagePlugin did not properly check that reads after jumping to file offsets returned data. This could lead to a denial-of-service where the decoder could be run a large number of times on empty data.
Clone Of:
Environment:
Last Closed: 2021-11-09 18:52:40 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4149 0 None None None 2021-11-09 17:24:48 UTC

Description Guilherme de Almeida Suckevicz 2021-05-07 14:12:44 UTC 
BlpImagePlugin did not properly check that reads after jumping to file offsets returned data. This could lead to a denial-of-service where the decoder could be run a large number of times on empty data. This dates to Pillow 5.1.0.

References:
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#security
https://github.com/python-pillow/Pillow/pull/5377
Comment 1 Guilherme de Almeida Suckevicz 2021-05-07 14:13:26 UTC 
Created mingw-python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1958267]


Created python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1958264]


Created python2-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1958265]


Created python3-pillow tracking bugs for this issue:

Affects: epel-7 [bug 1958266]
Comment 4 Sam Fowler 2021-05-11 00:27:28 UTC 
Mitigation:

To mitigate this feature on Red Hat Quay keep the invoice generation feature disabled, as it is by default.
Comment 6 Riccardo Schirone 2021-05-20 09:02:20 UTC 
Upstream patch:
https://github.com/python-pillow/Pillow/pull/5377/commits/496245aa4365d0827390bd0b6fbd11287453b3a1
Comment 9 errata-xmlrpc 2021-11-09 17:24:46 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
Comment 10 Product Security DevOps Team 2021-11-09 18:52:38 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-2021-28678
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