Heap-based buffer overflow in openexr (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU31715

Risk: Low

CVSSv4.0: 4.3 [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-2020-15306

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in "getChunkOffsetTableSize()" in "IlmImf/ImfMisc.cpp". A local user can pass specially crafted data to the applicatoin, trigger heap-based buffer overflow and cause a denial of service conditon on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openexr (Alpine package): 2.1.0-r0 - 2.2.1-r1

CPE2.3

• cpe:2.3:a:alpine:openexr_alpine_package:2.1.0-r0:*:*:*:*:alpine_linux:*:3.1
• cpe:2.3:a:alpine:openexr_alpine_package:2.2.1-r0:*:*:*:*:alpine_linux:*:3.8
• cpe:2.3:a:alpine:openexr_alpine_package:2.2.1-r1:*:*:*:*:alpine_linux:*:3.9

External links

https://git.alpinelinux.org/aports/commit/?id=cf52c5e86963b64c175bb99f1195d67595b2265e

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.