Bug 1935401 (CVE-2021-27923)

Summary:	CVE-2021-27923 python-pillow: Excessive memory allocation in ICO image reader
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, cstratak, kaycoth, manisandro, miminar, orion, paul, python-maint, rhel8-maint, rschiron, tomckay, torsava
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	python-pillow 8.1.2	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in python-pillow. Attackers can cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-19 14:09:15 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1935402, 1935403, 1935404, 1935405, 1935584, 1939598, 1939599
Bug Blocks:	1934710

Description Guilherme de Almeida Suckevicz 2021-03-04 19:50:39 UTC

Pillow before 8.1.2 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICO container, and thus an attempted memory allocation can be very large.

Reference:
https://pillow.readthedocs.io/en/stable/releasenotes/8.1.2.html

Comment 1 Guilherme de Almeida Suckevicz 2021-03-04 19:51:12 UTC

Created mingw-python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1935405]


Created python-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1935402]


Created python2-pillow tracking bugs for this issue:

Affects: fedora-all [bug 1935403]


Created python3-pillow tracking bugs for this issue:

Affects: epel-7 [bug 1935404]

Comment 3 Jason Shepherd 2021-03-08 03:04:43 UTC

Mitigation:

Disable the invoice generation feature to mitigate this vulnerability in Red Hat Quay.

Comment 5 Riccardo Schirone 2021-03-16 16:47:54 UTC

Upstream patch seems to be https://github.com/python-pillow/Pillow/commit/480f6819b592d7f07b9a9a52a7656c10bbe07442

Comment 6 errata-xmlrpc 2021-10-19 12:11:04 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 7 Product Security DevOps Team 2021-10-19 14:09:15 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-2021-27923

Comment 8 errata-xmlrpc 2021-11-09 17:24:32 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