#VU13514 Assertion failure in LibTIFF - CVE-2017-13726

Vulnerability identifier: #VU13514

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-13726

CWE-ID: CWE-617

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.

The vulnerability exists due to a reachable assertion abort in the function TIFFWriteDirectorySec(), related to tif_dirwrite.c and a SubIFD tag when processing malicious input. A remote attacker can send specially crafted input, trigger assertion failure and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 4.0.8

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2727

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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.