1939149 – (CVE-2021-3479) CVE-2021-3479 OpenEXR: Out-of-memory caused by allocation of a very large buffer

Bug 1939149 (CVE-2021-3479) - CVE-2021-3479 OpenEXR: Out-of-memory caused by allocation of a very large buffer

Summary: CVE-2021-3479 OpenEXR: Out-of-memory caused by allocation of a very large buffer

Reported:	2021-03-15 17:26 UTC by Michael Kaplan
Modified:	2022-04-17 21:12 UTC (History)
CC List:	6 users (show)
Fixed In Version:	OpenEXR 3.0.0-beta, OpenEXR 2.4.3
Doc Type:	If docs needed, set a value
Doc Text:	There's a flaw in OpenEXR's Scanline API functionality. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger excessive consumption of memory, resulting in an impact to system availability.
Clone Of:
Environment:
Last Closed:	2021-11-02 23:19:25 UTC
Embargoed:

Attachments	(Terms of Use)

Description Michael Kaplan 2021-03-15 17:26:27 UTC

Out-of-memory in openexr_exrenvmap_fuzzer

Comment 1 Michael Kaplan 2021-03-15 17:26:32 UTC

External References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25370

Comment 2 Michael Kaplan 2021-03-15 17:46:34 UTC

Created OpenEXR tracking bugs for this issue:

Affects: fedora-all [bug 1939184]

Comment 4 Todd Cullum 2021-03-30 17:43:30 UTC

Upstream patch commit: https://github.com/AcademySoftwareFoundation/openexr/commit/d80f11f4f55100d007ae80a162bf257ec291612c

Comment 5 Todd Cullum 2021-03-30 18:29:30 UTC

PR with some explanation: https://github.com/AcademySoftwareFoundation/openexr/pull/830

Comment 8 Todd Cullum 2021-03-30 18:44:37 UTC

*** Bug 1939150 has been marked as a duplicate of this bug. ***

Comment 9 Cary Phillips 2021-04-23 01:51:45 UTC

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

Comment 10 Cary Phillips 2021-05-25 21:40:10 UTC

This is also fixed in OpenEXR v2.4.3
https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-243-may-17-2021

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