Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 99.3%; technical severity is CVSS 9.8.
The findMacroMarker function in parserLib.pas in Rejetto HTTP File Server (aks HFS or HttpFileServer) 2.3x before 2.3c allows remote attackers to execute arbitrary programs via a %00 sequence in a search action.
Who should care
- Teams operating HTTP File Server, HTTP File Server (HFS)
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether HTTP File Server, HTTP File Server (HFS) is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apply updates per vendor instructions.
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Vendor remediation
Patch and remediation links
Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-94
- Affected versions
- Rejetto HTTP File Server (Start Including: 2.3, End Excluding: 2.3c); Rejetto HTTP File Server (HFS)
- Published
- 7 October 2014
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 99.3%
- Signal calculated at 85
External references
- Government advisory from www.cisa.gov
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Exploit information from packetstormsecurity.com
- Government advisory from www.kb.cert.org
- Exploit information from github.com
- Exploit information from www.exploit-db.com