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CVE-2003-0743

UnknownEPSS 5.51%

Last modified

CVE-2003-0743 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.51% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
5.51%

91.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
University Of CambridgeExim3.0
University Of CambridgeExim3.3
University Of CambridgeExim3.3.1
University Of CambridgeExim3.3.2
University Of CambridgeExim3.11
University Of CambridgeExim3.12
University Of CambridgeExim3.13
University Of CambridgeExim3.14
University Of CambridgeExim3.15
University Of CambridgeExim3.16
University Of CambridgeExim3.17
University Of CambridgeExim3.18
University Of CambridgeExim3.19
University Of CambridgeExim3.20
University Of CambridgeExim3.21
University Of CambridgeExim3.22
University Of CambridgeExim3.30
University Of CambridgeExim3.31
University Of CambridgeExim3.32
University Of CambridgeExim3.33
University Of CambridgeExim3.34
University Of CambridgeExim3.35
University Of CambridgeExim3.36
University Of CambridgeExim4.10
University Of CambridgeExim4.20

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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 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.
How severe is CVE-2003-0743?
Severity scoring for CVE-2003-0743 is pending analysis. The EPSS model estimates a 5.51% probability of exploitation in the next 30 days.
How do I fix CVE-2003-0743?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0743?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST