#VU25546 Heap-based buffer overflow in OpenJPEG - CVE-2020-8112

Vulnerability identifier: #VU25546

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8112

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenJPEG
Universal components / Libraries / Libraries used by multiple products

Vendor: openjpeg.org

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 the qmfbid==1 case, a different issue than CVE-2020-6851. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger 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 update from vendor's website.

Vulnerable software versions

OpenJPEG: 2.3.1

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External links
http://access.redhat.com/errata/RHSA-2020:0550
http://github.com/uclouvain/openjpeg/issues/1231
http://lists.debian.org/debian-lts-announce/2020/01/msg00035.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TFEVEKETJV7GOXD5RDWL35ESEDHC663E/
http://github.com/uclouvain/openjpeg/blob/v2.4.0/CHANGELOG.md

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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.