Denial of service in LibTIFF

1) Buffer overflow

EUVDB-ID: #VU63910

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-2020-19131

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the invertImage() function in the tiffcrop component. A remote attacker can pass a specially crafted file to the application and perform a denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

LibTIFF: 3.4 - 4.0.10

External links

http://bugzilla.maptools.org/show_bug.cgi?id=2831
http://blog.topsec.com.cn/%E5%A4%A9%E8%9E%8D%E4%BF%A1%E5%85%B3%E4%BA%8Elibtiff%E4%B8%ADinvertimage%E5%87%BD%E6%95%B0%E5%A0%86%E6%BA%A2%E5%87%BA%E6%BC%8F%E6%B4%9E%E7%9A%84%E5%88%86%E6%9E%90/
http://lists.debian.org/debian-lts-announce/2021/10/msg00004.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.