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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.
Vulnerability Assessment Details
Check for the version of the proftpd package
Detailed Explanation for this Vulnerability Assessment
The remote host is missing the patch for the advisory MDKSA-2006:217-1 (proftpd).
A stack-based buffer overflow in the sreplace function in ProFTPD 1.3.0
and earlier, permits remote attackers to cause a denial of service, as
demonstrated by vd_proftpd.pm, a 'ProFTPD remote exploit.'
Buffer overflow in the tls_x509_name_oneline function in the mod_tls
module, as used in ProFTPD 1.3.0a and earlier, and possibly other
products, permits remote attackers to execute arbitrary code via a large
data length argument, a different vulnerability than CVE-2006-5815.
ProFTPD 1.3.0a and earlier does not properly set the buffer size limit
when CommandBufferSize is specified in the configuration file, which
leads to an off-by-two buffer underflow. NOTE: in November 2006, the
role of CommandBufferSize was originally associated with CVE-2006-5815,
but this was an error stemming from an initial vague disclosure. NOTE:
ProFTPD developers dispute this issue, saying that the relevant memory
location is overwritten by assignment before further use within the
affected function, so this is not a vulnerability. (CVE-2006-6171)
Packages have been patched to correct these issues.
The previous update incorrectly linked the vd_proftd.pm issue with the
CommandBufferSize issue. These are two distinct issues and the previous
update only addressed CommandBufferSize (CVE-2006-6171), and the
mod_tls issue (CVE-2006-6170).
Solution : http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:217-1
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2007 Tenable Network Security
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