#VU63379 Out-of-bounds read in LibTIFF - CVE-2022-1056

Vulnerability identifier: #VU63379

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-1056

CWE-ID: CWE-125

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 the tiffcrop component. 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: 4.3.0

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External links
http://gitlab.com/libtiff/libtiff/-/merge_requests/307
http://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-1056.json
http://gitlab.com/libtiff/libtiff/-/issues/391

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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.