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HIGH · 7.5

CVE-2003-0743

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 ...

Vulnerability 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.

CVSS Score

7.5

HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL

Affected Products

VendorProductVersions
University Of CambridgeExim3.0

References

FAQ

What is CVE-2003-0743?

CVE-2003-0743 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2003-0743?

CVE-2003-0743 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2003-0743?

Check the references section above for vendor advisories and patch information. Affected products include: University Of Cambridge Exim.