Vulnerability identifier: #VU23464

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19630

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HTMLDOC
Web applications / Modules and components for CMS

Vendor: Michael R Sweet

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in the "hd_strlcpy()" function in "string.c" (when called from "render_contents" in "ps-pdf.cxx") due to a boundary error when processing a crafted HTML document. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system

Mitigation
Install update from vendor's website.

Vulnerable software versions

HTMLDOC: 1.9 - 1.9.7

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External links
http://github.com/michaelrsweet/htmldoc/issues/370

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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.