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GEN:SID | 1:326 |
Message | FINGER remote command execution attempt |
Summary | This event is generated when a remote command execution exploit against a finger daemon is attempted. |
Impact | Serious. The attacker may be presented with the opportunity to run a command of his choice on the target UNIX system |
Detailed Information | This event is generated when a specific attack against a vulnerable version of finger daemon is detected. The Finger daemon is used to provide information about users on a UNIX system. It used to be installed and enabled by default on most UNIX/Linux systems. The attack may allow an attacker to execute a command remotely on a target system with the privileges of the user running the "finger" daemon. The user is usually defined in the /etc/inetd.conf file and is commonly designated as "nobody". |
Affected Systems | |
Attack Scenarios | An attacker may try the attack and then executes a command to download a backdoor to the target system. He then connects to the system and may attempt to escalate his privileges by exploiting a local SUID application to gain "root" privileges. |
Ease of Attack | Simple, no exploit software is required, just a specially formatted finger query |
Corrective Action | Disable the finger daemon or limit the addresses that can access the service via firewall or TCP wrappers. |
Additional References | Arachnids: http://www.whitehats.com/info/IDS379 Bugtraq: http://online.securityfocus.com/bid/974 CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-1999-0150 |
Rule References | arachnids: 379 bugtraq: 974 cve: 1999-0150 |
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DID:482313
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