Vulnerability identifier: #VU31989

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16231

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
LibTIFF
Universal components / Libraries / Libraries used by multiple products

Vendor: LibTIFF

Description

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

** DISPUTED ** In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the function match() in pcre_exec.c because of a self-recursive call. NOTE: third parties dispute the relevance of this report, noting that there are options that can be used to limit the amount of stack that is used.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LibTIFF: 1:6.0p1-4+deb7u4

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External links
http://packetstormsecurity.com/files/150897/PCRE-8.41-Buffer-Overflow.html
http://seclists.org/fulldisclosure/2018/Dec/33
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/101688
http://bugs.exim.org/show_bug.cgi?id=2047

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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.