#VU3801 Out-of-bounds write in LibTIFF - CVE-2015-7554

Vulnerability identifier: #VU3801

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-2015-7554

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error in _TIFFVGetField() function in tif_dir.c in libtiff 4.0.6. A remote attacker can create a specially crafted TIFF image, trick the victim into opening it and execute arbitrary code on the target system.

Mitigation
Update to version 4.0.7.

Vulnerable software versions

LibTIFF: 4.0.6

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External links
https://www.openwall.com/lists/oss-security/2015/12/26/7

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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.