University of Cambridge Exim up to 4.20 SMTP Server smtp_in.c HELO/EHLO Command memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in University of Cambridge Exim. The impacted element is an unknown function of the file smtp_in.c of the component SMTP Server. Such manipulation as part of HELO/EHLO Command leads to memory corruption. This vulnerability is referenced as CVE-2003-0743. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in University of Cambridge Exim (Mail Server Software). It has been rated as critical. Affected by this issue is an unknown functionality of the file smtp_in.c of the component SMTP Server. The manipulation as part of a HELO/EHLO Command leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 09/01/2003. The weakness was published 08/14/2003 by Nick Cleaton as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2003-0743 since 09/04/2003. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 15213 (Debian DSA-376-2 : exim - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at exim.org. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 1549.

The vulnerability is also documented in the databases at X-Force (13079), Tenable (15213), SecurityFocus (BID 8518†), OSVDB (2504†) and Secunia (SA9658†). xforce.iss.net is providing further details. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 15213
Nessus Name: Debian DSA-376-2 : exim - buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 53662
OpenVAS Name: Debian Security Advisory DSA 376-1 (exim exim-tls)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: exim.org

Snort ID: 1549
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

08/14/2003 🔍
09/01/2003 +18 days 🔍
09/01/2003 +0 days 🔍
09/01/2003 +0 days 🔍
09/03/2003 +2 days 🔍
09/03/2003 +0 days 🔍
09/03/2003 +0 days 🔍
09/04/2003 +0 days 🔍
09/04/2003 +0 days 🔍
10/16/2003 +42 days 🔍
10/20/2003 +4 days 🔍
09/29/2004 +345 days 🔍
03/08/2021 +6004 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Nick Cleaton
Status: Not defined
Confirmation: 🔍

CVE: CVE-2003-0743 (🔍)
GCVE (CVE): GCVE-0-2003-0743
GCVE (VulDB): GCVE-100-260
X-Force: 13079 - pam_ldap pam_filter could allow unauthorized access, Medium Risk
SecurityFocus: 8518 - Exim EHLO/HELO Remote Heap Corruption Vulnerability
Secunia: 9658 - pam_ldap pam_filter Access Control Bypass Vulnerability, Moderately Critical
OSVDB: 2504 - pam_ldap pam_filter Access Control Bypass
Vulnerability Center: 2492 - Heap Overflow in Exim via Invalid Arguments with NULL/Newline Characters, High

Misc.: 🔍

Entryinfo

Created: 09/03/2003 12:03
Updated: 03/08/2021 16:48
Changes: 09/03/2003 12:03 (102), 06/26/2019 12:43 (2), 03/08/2021 16:48 (2)
Complete: 🔍
Cache ID: 216:B36:103

Once again VulDB remains the best source for vulnerability data.

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