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GEN:SID | 1:2118 |
Message | IMAP list overflow attempt |
Summary | This event is generated when a remote user uses invalid data within an IMAP LIST command sent to port 143 on an internal server. This may indicate an attempt to exploit a buffer overflow vulnerability in the IMAP LIST command. Impact: Possible shell access on the IMAP server, leading to arbitrary code execution. The attacker must have a valid IMAP account on the mail server to attempt this exploit. |
Impact | |
Detailed Information | When a large amount of data is sent to a vulnerable IMAP server in the LIST command, a buffer overflow condition may occur. This can allow the attacker to access the shell, where arbitrary code can be executed. Note that this exploit can only be attempted by a user with a valid IMAP account. |
Affected Systems | Any operating system that runs University of Washington imapd versions 10.234 or 12.264. |
Attack Scenarios | An attacker with an IMAP account on the server can send a sufficiently long LIST command to the IMAP server, creating a buffer overflow condition. This can then allow the attacker to gain shell access on the compromised server, possibly leading to the execution of arbitrary code. |
Ease of Attack | Simple. Exploits exist, but the user must have a valid IMAP account on the server. |
Corrective Action | Apply the appropriate patches for your operating system. Check the host for signs of compromise. |
Additional References | Bugtraq http://www.securityfocus.com/bid/1110 CVE http://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=CVE-2000-0284 Nessus http://cgi.nessus.org/plugins/dump.php3?id=10374 |
Rule References | bugtraq: 1110 cve: 2000-0284 nessus: 10374 |
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DID:700060
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