Vulnerability identifier: #VU86314

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-21596

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libde265
Mobile applications / Libraries for mobile applications

Vendor: struktur AG

Description

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

The vulnerability exists due to a boundary error within the decode_CABAC_bit() function. A remote attacker can pass a specially crafted file to the application, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libde265: 0.1 - 1.0.9

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External links
http://github.com/strukturag/libde265/issues/236
http://lists.debian.org/debian-lts-announce/2023/01/msg00020.html
http://www.debian.org/security/2023/dsa-5346

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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.