#VU31714 Use-after-free in OpenEXR - CVE-2020-15305

Vulnerability identifier: #VU31714

Vulnerability risk: Low

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

CVE-ID: CVE-2020-15305

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenEXR
Client/Desktop applications / Multimedia software

Vendor: OpenEXR

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in "DeepScanLineInputFile::DeepScanLineInputFile()" in "IlmImf/ImfDeepScanLineInputFile.cpp". A local user can cause a denial of service (DoS) condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenEXR: 1.0.4 - 2.5.1

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External links
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00048.html
http://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md
http://github.com/AcademySoftwareFoundation/openexr/blob/master/SECURITY.md
http://github.com/AcademySoftwareFoundation/openexr/pull/730
http://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.5.2
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKDRVXORM2VLNHRLFKS3JHRABSHZ5W5M/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SHYAKRAUEMYVCV7U5WLDRE2YFGSV5PIT/
http://usn.ubuntu.com/4418-1/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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