#VU58624 Heap-based buffer overflow in SMA 100


Published: 2021-12-07

Vulnerability identifier: #VU58624

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20043

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SMA 100
Hardware solutions / Security hardware applicances

Vendor: SonicWall

Description

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

The vulnerability exists due to a boundary error in the RAC_GET_BOOKMARKS_HTML5 (RacNumber 35) method that allows users to list their bookmarks. A remote user can pass specially crafted data to the application, trigger a heap-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 updates from vendor's website.

Vulnerable software versions

SMA 100: 10.2.1.1-19sv, 10.2.0.8-37sv


External links
http://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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