#VU12184 Infinite loop in FFmpeg - CVE-2018-7751

Vulnerability identifier: #VU12184

Vulnerability risk: Low

CVSSv4.0: 1.2 [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-2018-7751

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FFmpeg
Universal components / Libraries / Libraries used by multiple products

Vendor: ffmpeg.sourceforge.net

Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the svg_probe function in the libavformat/img2dec.c source code file due to improper handling of XML files. A remote attacker can trick the victim into opening a specially crafted XML file, trigger infinite loop and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

FFmpeg: 3.0.0 - 3.4.2

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External links
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/a6cba062051f345e8ebfdff34aba071ed73d923f

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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.