Vulnerability identifier: #VU31363

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5360

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 non-authenticated attacker to execute arbitrary code.

LibTIFF before 4.0.6 mishandles the reading of TIFF files, as demonstrated by a heap-based buffer over-read in the ReadTIFFImage function in coders/tiff.c in GraphicsMagick 1.3.27.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 4.0.0 - 4.0.5

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External links
http://bugzilla.maptools.org/show_bug.cgi?id=2500
http://gitlab.com/libtiff/libtiff/commit/739dcd28a061738b317c1e9f91029d9cbc157159
http://sourceforge.net/p/graphicsmagick/bugs/540/

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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.