Vulnerability identifier: #VU34467

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-11763

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenEXR
Client/Desktop applications / Multimedia software

Vendor: OpenEXR

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

An issue was discovered in OpenEXR before 2.4.1. There is an std::vector out-of-bounds read and write, as demonstrated by ImfTileOffsets.cpp.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenEXR: 2.4.0

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External links
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00051.html
http://bugs.chromium.org/p/project-zero/issues/detail?id=1987
http://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020
http://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3/
http://usn.ubuntu.com/4339-1/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.