Input validation error in LibTIFF

1) Input validation error

EUVDB-ID: #VU33769

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16232

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

** DISPUTED ** LibTIFF 4.0.8 has multiple memory leak vulnerabilities, which allow attackers to cause a denial of service (memory consumption), as demonstrated by tif_open.c, tif_lzw.c, and tif_aux.c. NOTE: Third parties were unable to reproduce the issue.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LibTIFF: 4.0.8

External links

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00036.html
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00041.html
http://packetstormsecurity.com/files/150896/LibTIFF-4.0.8-Memory-Leak.html
http://seclists.org/fulldisclosure/2018/Dec/32
http://seclists.org/fulldisclosure/2018/Dec/47
http://www.openwall.com/lists/oss-security/2017/11/01/11
http://www.openwall.com/lists/oss-security/2017/11/01/3
http://www.openwall.com/lists/oss-security/2017/11/01/7
http://www.openwall.com/lists/oss-security/2017/11/01/8
http://www.securityfocus.com/bid/101696

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.