CVE-2003-0899
9.8 · CRITICALOverview
CVE-2003-0899 is a critical-severity vulnerability affecting acme thttpd. It was published on November 3, 2003 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Buffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that contain '<' or '>' characters, which trigger the overflow when the characters are expanded to "<" and ">" sequences.
Remediation
Check the references section for vendor advisories and patches from acme. Update thttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| acme | thttpd | >= 2.21, < 2.23 | Affected |
References
Frequently Asked Questions
What is CVE-2003-0899?
CVE-2003-0899 is a critical-severity vulnerability affecting acme thttpd. It was published on November 3, 2003 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2003-0899?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2003-0899?
Check the references section for vendor advisories and patches from acme. Update thttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2003-0899?
CyberStrike's AI-powered security agents can automatically detect CVE-2003-0899 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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