#VU103972 Out-of-bounds read in LibTIFF - CVE-2016-3620

Vulnerability identifier: #VU103972

Vulnerability risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-3620

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 (DoS) attack.

The vulnerability exists due to a boundary error in The ZIPEncode function in tif_zip.c in the bmp2tiff tool in LibTIFF, when the "-c zip" option is used. A remote attacker can perform a denial of service (buffer over-read) by sending a crafted BMP image.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

LibTIFF: 3.4 - 4.0.10

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2570
https://www.openwall.com/lists/oss-security/2016/04/07/2
https://www.securitytracker.com/id/1035508
https://security.gentoo.org/glsa/201701-16

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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.