Vulnerability identifier: #VU32195

Vulnerability risk: High

CVSSv3.1: 9 [AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2015-8668

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 a boundary error in Heap-based buffer overflow in the PackBitsPreEncode function in tif_packbits.c in bmp2tiff in libtiff 4.0.6 and earlier. A remote attacker can use a large width field in a BMP image. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

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

Vulnerable software versions

LibTIFF: 1:6.0p1-4+deb7u4

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External links
http://packetstormsecurity.com/files/135080/libtiff-4.0.6-Heap-Overflow.html
http://rhn.redhat.com/errata/RHSA-2016-1546.html
http://rhn.redhat.com/errata/RHSA-2016-1547.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/archive/1/537208/100/0/threaded
http://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.