#VU68818 Out-of-bounds write in LibTIFF - CVE-2022-3626

Vulnerability identifier: #VU68818

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-3626

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

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

Vendor: LibTIFF

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing TIFF images within the _TIFFmemset() function in libtiff/tif_unix.c. A remote attacker can pass a specially crafted TIFF file to the application, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 3.4 - 4.6.1

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External links
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-3626.json
https://gitlab.com/libtiff/libtiff/-/issues/426
https://gitlab.com/libtiff/libtiff/-/commit/236b7191f04c60d09ee836ae13b50f812c841047

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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.