#VU5919 Heap-based buffer overflow in LibTIFF - CVE-2017-5225

Vulnerability identifier: #VU5919

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-2017-5225

CWE-ID: CWE-122

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 boundary error in "tools/tiffcp.cwhen" processing images. A remote attacker can create an image with specially crafted BitsPerSample value, trigger heap-based buffer overflow and execute arbitrary code on the target system with privileges of the current user.

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

Mitigation
Install update from GIT repository.

Vulnerable software versions

LibTIFF: 4.0 - 4.0.7

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External links
https://github.com/vadz/libtiff/commit/5c080298d59efa53264d7248bbe3a04660db6ef7

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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.