CVE-2003-0743
7.5 · HIGHOverview
CVE-2003-0743 is a high-severity vulnerability affecting university_of_cambridge exim. It was published on October 20, 2003 and has a CVSS 2.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Heap-based buffer overflow in smtp_in.c for Exim 3 (exim3) before 3.36 and Exim 4 (exim4) before 4.21 may allow remote attackers to execute arbitrary code via an invalid (1) HELO or (2) EHLO argument with a large number of spaces followed by a NULL character and a newline, which is not properly trimmed before the "(no argument given)" string is appended to the buffer.
Remediation
Check the references section for vendor advisories and patches from university_of_cambridge. Update exim 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 |
|---|
References
Frequently Asked Questions
What is CVE-2003-0743?
CVE-2003-0743 is a high-severity vulnerability affecting university_of_cambridge exim. It was published on October 20, 2003 and has a CVSS 2.0 base score of 7.5 (HIGH).
How severe is CVE-2003-0743?
This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2003-0743?
Check the references section for vendor advisories and patches from university_of_cambridge. Update exim 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-2003-0743?
CyberStrike's AI-powered security agents can automatically detect CVE-2003-0743 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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