#VU54035 Heap-based buffer overflow


Published: 2021-06-10

Vulnerability identifier: #VU54035

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23165

CWE-ID: CWE-122

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the pspdf_prepare_outpages() function in ps-pdf.cxx. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and crash the library.


Mitigation
Install updates from vendor's website.

Vulnerable software versions

HTMLDOC: 1.9, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7, 1.9.8, 1.9.9, 1.9.10, 1.9.11

CPE

External links
https://github.com/michaelrsweet/htmldoc/issues/413
https://github.com/michaelrsweet/htmldoc/commit/6e8a95561988500b5b5ae4861b3b0cbf4fba517f


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.


Latest bulletins with this vulnerability