Vulnerability identifier: #VU32197

Vulnerability risk: Medium

CVSSv3.1: 7.1 [AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2016-3991

CWE-ID: CWE-122

Exploitation vector: Local

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 loadImage function in the tiffcrop tool in LibTIFF 4.0.6 and earlier. A remote attacker can use a crafted TIFF image with zero tiles. 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

---

External links
http://bugzilla.maptools.org/show_bug.cgi?id=2543
http://lists.opensuse.org/opensuse-updates/2016-09/msg00039.html
http://rhn.redhat.com/errata/RHSA-2016-1546.html
http://rhn.redhat.com/errata/RHSA-2016-1547.html
http://www.debian.org/security/2017/dsa-3762
http://www.openwall.com/lists/oss-security/2016/04/12/3
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/85996
http://bugzilla.redhat.com/show_bug.cgi?id=1326249
http://security.gentoo.org/glsa/201701-16

---

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.