SMA100 Apache httpd mod_cgi Stack Buffer Overflow
Actively exploited in the wild. Patch or mitigate immediately — don't wait for a maintenance window.
An unauthenticated attacker, remotely over the network, with no user interaction, can fully compromise the system — steal data, tamper with it and take it offline.
A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.
Inferred from the weakness type (CWE) and how the flaw is reached — the techniques an attacker would chain to exploit this. Real-world corroboration appears here as threat intel is folded in.
Corroborated threat activity referencing this CVE — with source and confidence, not inference.
Named threat actors and observed ATT&CK techniques appear here as intel feeds are folded in — the ATT&CK chain above stays inferred until then.
Generated by Wavense from the CVE record — an immediate mitigation and the permanent fix.
As an interim measure, restrict network access to the SMA appliance's administrative interfaces and HTTPD service from untrusted networks using firewall rules. Deploying a Web Application Firewall (WAF) to inspect and filter requests targeting mod_cgi can help block exploit attempts. Enhance monitoring for suspicious HTTP requests and unusual process activity on the appliance that could indicate exploitation.
The permanent resolution involves upgrading the affected SMA 200, 210, 400, 410, and 500v appliances. Users should upgrade their firmware to versions newer than 10.2.0.8-37sv, 10.2.1.1-19sv, and 10.2.1.2-24sv, following vendor guidance. Consult official SMA documentation for the latest patched firmware releases to ensure full remediation of this vulnerability.
A remote, unauthenticated attacker can exploit this vulnerability to achieve arbitrary code execution on the SMA appliance, running as the 'nobody' user. This grants an initial foothold, enabling further privilege escalation, data exfiltration, or disruption of the appliance's services. Successful exploitation poses a critical risk to the confidentiality, integrity, and availability of the affected system and potentially the network it secures.
Other CVEs affecting sma 200 firmware
Improper neutralization of a SQL Command leading to SQL Injection vulnerability impacting end-of-life Secure Remote Access (SRA) products, specifically the SRA appliances running all 8.x firmware and 9.0.0.9-26sv or earlier
A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
Improper neutralization of special elements in the SMA100 SSL-VPN management interface allows a remote authenticated attacker with administrative privilege to inject arbitrary commands as a 'nobody' user, potentially leading to OS Command Injection Vulnerability.