#VU54181 Heap-based buffer overflow in OpenEXR

Vulnerability identifier: #VU54181

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: N/A

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenEXR
Client/Desktop applications / Multimedia software

Vendor: OpenEXR

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the Imf_2_5::copyIntoFrameBuffer() function. A remote attacker can pass specially crafted EXR file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenEXR: 2.0.0 - 2.5.6

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External links
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.5.7
https://github.com/AcademySoftwareFoundation/openexr/commit/6006b2e34fc6457e96d3fb422479b02c19843a1a
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28051
https://github.com/AcademySoftwareFoundation/openexr/pull/872

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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.