Heap-based buffer overflow in libde265 - CVE-2020-21598

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 ff_hevc_put_unweighted_pred_8_sse() function. A remote attacker can pass specially crafted input to the application, trigger a 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.

Remediation

External links

• https://github.com/strukturag/libde265/issues/237
• https://cwe.mitre.org/data/definitions/122.html
• https://lists.debian.org/debian-lts-announce/2023/01/msg00020.html
• https://www.debian.org/security/2023/dsa-5346