Heap-based buffer overflow in openjpeg (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU24306

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/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: CVE-2020-6851

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

Exploit availability: No

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 opj_t1_clbl_decode_processor() function in libopenjp2.so. 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 (Alpine package): 2.3.0-r0 - 2.3.0-r4

CPE2.3

• cpe:2.3:a:alpine:openjpeg_alpine_package:2.3.0-r0:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:openjpeg_alpine_package:2.3.0-r1:*:*:*:*:alpine_linux:*:3.5
• cpe:2.3:a:alpine:openjpeg_alpine_package:2.3.0-r2:*:*:*:*:alpine_linux:*:3.6

External links

https://git.alpinelinux.org/aports/commit/?id=570efe74c1b275bfb920f1434d2a877123df4fcc
https://git.alpinelinux.org/aports/commit/?id=61851c5e9528fc803ee3dff5431d76482e125ba3
https://git.alpinelinux.org/aports/commit/?id=86f2db7e3bb8c5fe41cfdab6eb9e12d3f0288408
https://git.alpinelinux.org/aports/commit/?id=a60544e51180dade6c8e710f1bfd7060618ede11
https://git.alpinelinux.org/aports/commit/?id=d3cf817a7725469c0dc61da3cdb79395f0f951d2

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.