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.
Published: 2003-09-06
Score: 7.5 High
EPSS: 7.0% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2003-0734 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.
History

No history.

Subscriptions

University Of Cambridge Exim
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-08T02:05:12.644Z

Reserved: 2003-09-04T00:00:00.000Z

Link: CVE-2003-0743

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2003-10-20T04:00:00.000

Modified: 2026-04-16T00:27:16.627

Link: CVE-2003-0743

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses