Microsoft Exchange SMTP extended verb request buffer overflow
| exchange-smtp-verb-bo (13432) |  High Risk |
Description:
Microsoft Exchange and Microsoft Exchange are vulnerable to a buffer overflow, caused by improper bounds checking. By connecting to an SMTP port on the vulnerable Exchange server, a remote attacker could send a specially-crafted extended verb request, which is used to communicate Exchange-specific information among Exchange servers, to overflow a buffer and cause the SMTP service to fail and execute arbitrary code on the system with Local System privileges.
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS03-046. See References.
References:
- CERT Advisory CA-2003-27: Multiple Vulnerabilities in Microsoft Windows and Exchange.
- CIAC Information Bulletin O-005: Microsoft Exchange Server Vulnerabilities.
- Microsoft Security Bulletin MS03-046: Vulnerability in Exchange Server Could Allow Arbitrary Code Execution (829436).
- VulnWatch Mailing List, Wed Oct 22 2003 - 04:13:56 CDT: MS03-046 Microsoft Exchange 2000 Heap Overflow.
- BID-8838: Microsoft Exchange Server Buffer Overflow Vulnerability
- CVE-2003-0714: The Internet Mail Service in Exchange Server 5.5 and Exchange 2000 allows remote attackers to cause a denial of service (memory exhaustion) by directly connecting to the SMTP service and sending a certain extended verb request, possibly triggering a buffer overflow in Exchange 2000.
- US-CERT VU#422156: Microsoft Exchange Server fails to properly handle specially crafted SMTP extended verb requests
Platforms Affected:
- Microsoft Exchange Server 2000 SP3
- Microsoft Exchange Server 5.0 SP2
- Microsoft Exchange Server 5.5 SP4
Reported:
Oct 15, 2003
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