Out-of-bounds write in libde265 - CVE-2022-43248

Vulnerability identifier: #VU86847

CSH Severity: Low

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

CVE-ID: CVE-2022-43248

CWE-ID: CWE-787

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
libde265

Software vendor:
struktur AG

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the put_weighted_pred_avg_16_fallback() function in fallback-motion.cc. A remote attacker pass a specially crafted video file to the application, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://github.com/strukturag/libde265/issues/349
• https://lists.debian.org/debian-lts-announce/2023/01/msg00020.html
• https://www.debian.org/security/2023/dsa-5346