Wietse Venema Postfix 1999-09-06/1999-12-31/2000-02-28 SMTP Server memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Wietse Venema Postfix 1999-09-06/1999-12-31/2000-02-28. This affects an unknown code block of the component SMTP Server. The manipulation with an unknown input leads to a memory allocation vulnerability. CWE is classifying the issue as CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. This is going to have an impact on availability. The summary by CVE is:

Vulnerability in Postfix SMTP server before 20010228-pl07, when configured to email the postmaster when SMTP errors cause the session to terminate, allows remote attackers to cause a denial of service (memory exhaustion) by generating a large number of SMTP errors, which forces the SMTP session log to grow too large.

The weakness was shared 11/11/2001 by Wietse Venema (Website). The advisory is shared at xforce.iss.net. This vulnerability is uniquely identified as CVE-2001-0894. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 14930 (Debian DSA-093-1 : postfix - remote DoS), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 74095 (Postfix SMTP Log Denial of Service Vulnerability).

Upgrading to version 20011115 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (7568) and Tenable (14930).

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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CVSSv2info

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Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
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ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 14930
Nessus Name: Debian DSA-093-1 : postfix - remote DoS
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OpenVAS ID: 53833
OpenVAS Name: Debian Security Advisory DSA 093-1 (postfix)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: Postfix 20011115

Timelineinfo

11/11/2001 🔍
11/11/2001 +0 days 🔍
11/11/2001 +0 days 🔍
11/15/2001 +4 days 🔍
12/12/2001 +27 days 🔍
09/29/2004 +1022 days 🔍
12/30/2004 +92 days 🔍
07/10/2014 +3479 days 🔍
05/28/2019 +1783 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: Wietse Venema
Status: Not defined

CVE: CVE-2001-0894 (🔍)
X-Force: 7568
Vulnerability Center: 6665 - DoS in Wietse Venema Postfix via SMTP, High
SecurityFocus: 3544 - Postfix SMTP Log Denial Of Service Vulnerability

Entryinfo

Created: 07/10/2014 11:55
Updated: 05/28/2019 17:29
Changes: 07/10/2014 11:55 (74), 05/28/2019 17:29 (1)
Complete: 🔍

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