#VU7403 Improper input validation in LibTIFF - CVE-2017-9147

Vulnerability identifier: #VU7403

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-9147

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

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 weakness exits due to invalid read in the _TIFFVGetField function in tif_dir.c. A remote attacker can send specially crafted TIFF file and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 4.0.8-3.

Vulnerable software versions

LibTIFF: 4.0.7

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External links
https://bugzilla.maptools.org/show_bug.cgi?id=2693

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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. However, proof of concept for this vulnerability is available.