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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Misc. >> icmp leak Vulnerability Assessment Details
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icmp leak |
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icmpleak check Detailed Explanation for this Vulnerability Assessment The remote host is vulnerable to an 'icmp leak' of potentially confidential data. That is, when the host generates an ICMP error packet other than 'destination unreachable', the error packet is supposed to only contain the original message or a portion of the original message. Due to a bug in the remote TCP/IP stack, these ICMP error messages will also contain fragments of the content of the remote kernel memory. A possible hacker may use this flaw to remotely sniff what is going into the host's memory, especially network packets that it sees, and obtain useful information such as POP passwords, HTTP authentication fields, and so on. Solution : Contact your vendor for a fix. If the remote host is running Linux 2.0, upgrade to Linux 2.0.40. See also : http://www.cartel-securite.fr/pbiondi/adv/CARTSA-20030314-icmpleak http://www.kb.cert.org/vuls/id/471084 Network Security Threat Level: High Networks Security ID: Vulnerability Assessment Copyright: This script is Copyright (C) 2003 Tenable Network Security |
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