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GEN:SID | 1:1845 |
Message | IMAP list literal overflow attempt |
Summary | This event is generated when a remote attacker sends an IMAP LIST command with a malformed and overly long argument to an internal IMAP server port. 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. |
Detailed Information | When a LIST command with an overly long argument is sent to a vulnerable IMAP server, a buffer overflow condition may occur. This can allow an attacker to execute arbitrary code from the command shell. Note that this exploit can only be attempted by a user with a valid IMAP account. |
Affected Systems | Any operating system running 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 patch for your current version of imapd appropriate to your operating system. |
Additional References | Bugtraq http://www.securityfocus.com/bid/1110 |
Rule References | bugtraq: 1110 cve: 2000-0284 nessus: 10374 |
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DID:500028
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