#VU16204 Heap-based buffer overflow in LibTIFF - CVE-2018-16335

Vulnerability identifier: #VU16204

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-16335

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 cause DoS condition on the target system.

The vulnerability exists due to heap-based buffer overflow in newoffsets handling in ChopUpSingleUncompressedStrip in tif_dirread.c. A remote unauthenticated attacker can trick the victim into opening a specially crafted crafted TIFF file, trigger memory corruption and cause the affected software to crash, resulting in a DoS condition.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 4.0.9

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External links
https://gitlab.com/libtiff/libtiff/commit/3719385a3fac5cfb20b487619a5f08abbf967cf8

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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.