#VU38801 Buffer overflow in Libav - CVE-2017-9987

Vulnerability identifier: #VU38801

Vulnerability risk: Medium

CVSSv4.0: 6.6 [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-2017-9987

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Libav
Client/Desktop applications / Multimedia software

Vendor: Libav

Description

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

There is a heap-based buffer overflow in the function hpel_motion in mpegvideo_motion.c in libav 12.1. A crafted input can lead to a remote denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Libav: 12.1

---

External links
https://bugzilla.libav.org/show_bug.cgi?id=1067
https://lists.debian.org/debian-lts-announce/2019/09/msg00000.html

---

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.