#VU63824 Out-of-bounds read in LibTIFF - CVE-2022-1623

Vulnerability identifier: #VU63824

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-1623

CWE-ID: N/A

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 perform a denial of service attack.

The vulnerability exists due to a boundary condition in LZWDecode() function in libtiff/tif_lzw.c:624. A remote attacker can create a specially crafted TIFF file, trick the victim into opening it, trigger out-of-bounds read error and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibTIFF: 3.4 - 4.3.0

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External links
https://gitlab.com/libtiff/libtiff/-/commit/b4e79bfa0c7d2d08f6f1e7ec38143fc8cb11394a
https://gitlab.com/libtiff/libtiff/-/issues/410
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-1623.json

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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.