#VU22615 Integer overflow in LibTIFF - CVE-2019-17546

Vulnerability identifier: #VU22615

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-17546

CWE-ID: CWE-190

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 execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when processing RGBA images. A remote attacker can create a specially crafted RGBA image, pass it to the affected application, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibTIFF: 4.0 - 4.0.10

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External links
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16443
https://github.com/OSGeo/gdal/commit/21674033ee246f698887604c7af7ba1962a40ddf
https://gitlab.com/libtiff/libtiff/commit/4bb584a35f87af42d6cf09d15e9ce8909a839145

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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.