#VU101261 Stack-based buffer overflow in SMA 100 - CVE-2024-53703

Vulnerability identifier: #VU101261

Vulnerability risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2024-53703

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
SMA 100
Hardware solutions / Security hardware applicances

Vendor: SonicWall

Description

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

The vulnerability exists due to a boundary error within the SSL-VPN mod_httprp library loaded by the Apache web server. A remote unauthenticated attacker can send specially crafted requests to the SSL-VPN web interface, trigger a 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 updates from vendor's website.

Vulnerable software versions

SMA 100: 10.2.1.0-17sv, 10.2.1.1-19sv, 10.2.1.2-24sv, 10.2.1.3-27sv, 10.2.1.4-31sv, 10.2.1.5-34sv, 10.2.1.6-37sv, 10.2.1.7, 10.2.1.8, 10.2.1.9, 10.2.1.10-62sv, 10.2.1.11-65sv, 10.2.1.12, 10.2.1.13-72sv

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External links
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0018

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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. However, proof of concept for this vulnerability is available.