Pmail Mercury Mail Transport System up to 4.51 SMTP Server memory corruption

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

A vulnerability was found in Pmail Mercury Mail Transport System up to 4.51. It has been declared as critical. This vulnerability affects an unknown code block of the component SMTP Server. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in the MercuryS SMTP server in Mercury Mail Transport System, possibly 4.51 and earlier, allows remote attackers to execute arbitrary code via a long AUTH CRAM-MD5 string. NOTE: this might overlap CVE-2006-5961.

The bug was discovered 08/18/2007. The weakness was presented 08/20/2007 by eliteb0y (Website). The advisory is shared for download at archives.neohapsis.com. This vulnerability was named CVE-2007-4440 since 08/20/2007. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in Perl. It is possible to download the exploit at securityfocus.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 25928 (Mercury SMTP Server AUTH CRAM-MD5 Remote Buffer Overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SMTP problems and running in the context r.

Upgrading eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 5555.

The vulnerability is also documented in the databases at X-Force (36299), Tenable (25928) and Exploit-DB (4294).

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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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: 🔍
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

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Nessus ID: 25928
Nessus Name: Mercury SMTP Server AUTH CRAM-MD5 Remote Buffer Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Saint ID: exploit_info/mercury_smtp_crammd5
Saint Name: Mercury Mail SMTP AUTH CRAM-MD5 buffer overflow

MetaSploit ID: mercury_cram_md5.rb
MetaSploit Name: Mercury Mail SMTP AUTH CRAM-MD5 Buffer Overflow
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
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Timelineinfo

08/18/2007 🔍
08/18/2007 +0 days 🔍
08/18/2007 +0 days 🔍
08/20/2007 +2 days 🔍
08/20/2007 +0 days 🔍
08/20/2007 +0 days 🔍
08/20/2007 +0 days 🔍
08/20/2007 +0 days 🔍
08/20/2007 +0 days 🔍
08/23/2007 +2 days 🔍
08/26/2007 +3 days 🔍
03/16/2015 +2759 days 🔍
07/24/2019 +1591 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Researcher: eliteb0y
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-4440 (🔍)
X-Force: 36299
SecurityTracker: 1018587
Vulnerability Center: 15922 - Mercury Mail Transport System SMTP Server Vulnerability Allows Code Execution, High
SecurityFocus: 25357 - Mercury Mail Transport System AUTH CRAM-MD5 Buffer Overflow Vulnerability
Secunia: 26519
OSVDB: 39669 - Mercury Mail Transport System SMTP AUTH CRAM-MD5 Remote Overflow
Vupen: ADV-2007-2918

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/16/2015 12:18
Updated: 07/24/2019 10:31
Changes: 03/16/2015 12:18 (92), 07/24/2019 10:31 (4)
Complete: 🔍

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