Simple Web Server Connection Header Buffer Overflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
Simple Web Server 2.2 rc2 contains a stack-based buffer overflow vulnerability in its handling of the Connection HTTP header. When a remote attacker sends an overly long string in this header, the server uses vsprintf() without proper bounds checking, leading to a buffer overflow on the stack. This flaw allows remote attackers to execute arbitrary code with the privileges of the web server process. The vulnerability is triggered before authentication.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PMSoftware | Simple Web Server | 2.2 rc2 | — | No fix listed | CNA |
- Simple Web Server VendorPMSoftware Affected 2.2 rc2 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2012-10053
- 2026-10-03 Alias added: GHSA-2c3g-g985-wqv4
References
Exploit 4
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/sws_connection_bof.rb
- https://www.exploit-db.com/exploits/19937
- https://www.exploit-db.com/exploits/20028
- http://ghostinthelab.wordpress.com/2012/07/19/simplewebserver-2-2-rc2-remote-buffer-overflow-exploit/
More PMSoftware vulnerabilities
- TI-2005-01111 Buffer overflow in PMSoftware Simple Web Server 1.0 allows remote attackers to execute… CVSS 2.0HIGH 7.5
Sources
- CVE-2012-10053 · CVE Program
- CVE-2012-10053 · NVD
- FIRST EPSS
- GHSA-2c3g-g985-wqv4 · GitHub Advisory Database · CC BY 4.0
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