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vendor:
Mercury MTA
by:
SecurityFocus
7.5
CVSS
HIGH
Buffer Overflow
120
CWE
Product Name: Mercury MTA
Affected Version From: 1.48
Affected Version To: N/A
Patch Exists: Yes
Related CWE: N/A
CPE: N/A
Metasploit: N/A
Other Scripts: N/A
Tags: N/A
CVSS Metrics: N/A
Nuclei References: N/A
Nuclei Metadata: N/A
Platforms Tested: NetWare, Windows NT
2001

Mercury MTA Buffer Overflow Vulnerability

Mercury MTA is a mail-transfer agent available for Novell NetWare and Windows NT. Novell versions of the Mercury POP3 server prior to 1.48 are vulnerable to a buffer overflow caused by inadequate string handling for the APOP authentication command. Because the overflow occurs in an authentication command parser, unauthenticated remote users can trigger the overflow. It is unknown whether the overflow can lead to arbitrary code execution, but proof-of-concept code is available that will crash the NetWare server, requiring a reboot.

Mitigation:

Upgrade to the latest version of Mercury MTA
Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/2641/info

Mercury MTA is a mail-transfer agent available for Novell NetWare and Windows NT. Novell versions of the Mercury POP3 server prior to 1.48 are vulnerable to a buffer overflow caused by inadequate string handling for the APOP authentication command.

Because the overflow occurs in an authentication command parser, unauthenticated remote users can trigger the overflow. It is unknown whether the overflow can lead to arbitrary code execution, but proof-of-concept code is available that will crash the NetWare server, requiring a reboot. 

perl -e 'print "APOP " . "a"x2048 . " " . "a"x2048 . "\r\n"' | nc mercury_host 110

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