#VU65440 Division by zero in LibTIFF - CVE-2022-2056

Vulnerability identifier: #VU65440

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-2022-2056

CWE-ID: CWE-369

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 (DoS) attack.

The vulnerability exists due to a division by zero error when parsing TIFF files in tiffcrop. A remote attacker can trick the victim to open a specially crafted file and crash the affected application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibTIFF: 4.3.0

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External links
https://gitlab.com/libtiff/libtiff/-/issues/415
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-2056.json
https://gitlab.com/libtiff/libtiff/-/merge_requests/346
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4TSS7MJ7OO7JO5BNKCRYSFU7UAYOKLA2/

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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.