#VU3802 Out-of-bounds write in LibTIFF - CVE-2016-3632

Vulnerability identifier: #VU3802

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-3632

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 cause DoS condition or execute arbitrary code.

The weakness exists in the _TIFFVGetField function in tif_dirinfo.c due to out-of-bounds write. A remote attacker can supply a specially crafted TIFF image and cause the service to crash or execute arbitrary code with elevated privileges.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 4.0.6

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2549

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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.