Apache Tomcat up to 6.0.35/7.0.27 NIO Connector NioEndpoint.java resource management

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

A vulnerability classified as critical was found in Apache Tomcat up to 6.0.35/7.0.27 (Application Server Software). Affected by this vulnerability is an unknown code block of the file NioEndpoint.java of the component NIO Connector. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

org/apache/tomcat/util/net/NioEndpoint.java in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28, when the NIO connector is used in conjunction with sendfile and HTTPS, allows remote attackers to cause a denial of service (infinite loop) by terminating the connection during the reading of a response.

The weakness was published 12/04/2012 by Arun Neelicattu with Red Hat Security Response Team as 72 as confirmed posting (Full-Disclosure). It is possible to read the advisory at seclists.org. The public release has been coordinated with Apache. This vulnerability is known as CVE-2012-4534 since 08/21/2012. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 74942 (openSUSE Security Update : tomcat (openSUSE-SU-2013:0170-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 185021 (HP-UX Running Apache Multiple Vulnerabilities (HPSBUX02866)).

Upgrading to version 6.0.36 or 7.0.28 eliminates this vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16247.

The vulnerability is also documented in the databases at X-Force (80516) and Tenable (74942). Similar entries are available at 7073, 7074, 63089 and 62933.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 74942
Nessus Name: openSUSE Security Update : tomcat (openSUSE-SU-2013:0170-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892725
OpenVAS Name: Debian Security Advisory DSA 2725-1 (tomcat6 - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Tomcat 6.0.36/7.0.28
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

08/21/2012 🔍
10/19/2012 +59 days 🔍
12/04/2012 +46 days 🔍
12/04/2012 +0 days 🔍
12/04/2012 +0 days 🔍
12/05/2012 +1 days 🔍
12/05/2012 +0 days 🔍
12/05/2012 +0 days 🔍
12/06/2012 +1 days 🔍
12/10/2012 +4 days 🔍
12/19/2012 +9 days 🔍
06/13/2014 +541 days 🔍
04/19/2021 +2502 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: 72
Researcher: Arun Neelicattu
Organization: Red Hat Security Response Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4534 (🔍)
OVAL: 🔍

X-Force: 80516 - Apache Tomcat NIO denial of service, Medium Risk
SecurityTracker: 1027836 - Apache Tomcat Connection Processing Bug Lets Remote Users Deny Service
Vulnerability Center: 37605 - Apache Tomcat 6.0.0 Through 6.0.35 and 7.0.0 Through 7.0.27 Remote Denial of Service Vulnerability, High
SecurityFocus: 56813 - Apache Tomcat CVE-2012-4534 Denial of Service Vulnerability
Secunia: 51425 - Apache Tomcat Multiple Vulnerabilities, Moderately Critical
OSVDB: 88095

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 12/06/2012 15:27
Updated: 04/19/2021 18:08
Changes: 12/06/2012 15:27 (88), 04/22/2017 13:00 (13), 04/19/2021 18:08 (3)
Complete: 🔍
Committer: olku

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!