Bug 1939144 (CVE-2021-3475)

Summary:	CVE-2021-3475 OpenEXR: Integer-overflow in Imf_2_5::calculateNumTiles
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	cbpilm, jeischma, jridky, kwizart, rdieter, rh-spice-bugs
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	OpenEXR 3.0.0-beta, OpenEXR 2.4.3	Doc Type:	If docs needed, set a value
Doc Text:	There is a flaw in OpenEXR. An attacker who can submit a crafted file to be processed by OpenEXR could cause an integer overflow, potentially leading to problems with application availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 23:18:28 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:	1939181, 1944359, 1944360, 1944361, 1944362
Bug Blocks:	1929339, 1944369

Description Michael Kaplan 2021-03-15 17:25:45 UTC

Integer-overflow in Imf_2_5::calculateNumTiles

Comment 1 Michael Kaplan 2021-03-15 17:25:49 UTC

External References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25297

Comment 2 Michael Kaplan 2021-03-15 17:48:24 UTC

Created OpenEXR tracking bugs for this issue:

Affects: fedora-all [bug 1939181]

Comment 3 Todd Cullum 2021-03-29 19:06:21 UTC

Flaw summary:

An integer overflow could occur in calculateNumTiles() of OpenEXR/IlmImf/ImfTiledMisc.cpp if size=MAX_INT. The patch uses a 64-bit integer type to hold the return value of levelSize() and avoid this flaw.

Comment 6 Todd Cullum 2021-03-31 00:13:30 UTC

Upstream patch commit: https://github.com/AcademySoftwareFoundation/openexr/commit/2a18ed424a854598c2a20b5dd7e782b436a1e753

Comment 7 Cary Phillips 2021-04-23 01:19:43 UTC

This is fixed in OpenEXR release v2.5.4, v2.5.5, and v3.0.1+.