| GEN:SID | 1:2330 |
| Message | IMAP auth overflow attempt |
| Summary | This event is generated when a remote user sends an overly long string to an IMAP server via the command AUTH. This may indicate an attempt to exploit a buffer overflow condition.
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| Impact | Serious. Possible remote execution of arbitrary code, which may lead to a remote root compromise.
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| Detailed Information | When a large amount of data is sent to a vulnerable IMAP server in the AUTHENTICATE command, a buffer overflow condition may occur. This can allow the attacker to execute arbitrary code, which may allow the attacker to gain root access to the compromised server.
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| Affected Systems | IMAP servers
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| Attack Scenarios | An attacker can send a sufficiently long AUTHENTICATE command to the IMAP server, creating a buffer overflow condition. This can then allow the attacker to execute code of their choosing and possibly gain root access to the compromised server.
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| Ease of Attack | Simple. Exploits exist.
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| Corrective Action | Apply the appropriate patches for your operating system.
Check the host for signs of compromise.
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| Additional References | Bugtraq http://www.securityfocus.com/bid/8861
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| Rule References | bugtraq: 8861
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