Heap-based buffer overflow in libde265 - CVE-2020-21595

Vulnerability identifier: #VU86313

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2020-21595

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: struktur AG

Affected software:
libde265

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

The vulnerability exists due to a boundary error within the mc_luma() function when decoding files. A remote attacker can pass specially crafted file to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Install updates from vendor's website.

• https://github.com/strukturag/libde265/issues/239
• https://www.debian.org/security/2023/dsa-5346