Apache Tomcat 8.0.0/8.0.1/8.0.3 AJP Request Zero Length input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apache Tomcat 8.0.0/8.0.1/8.0.3. This impacts an unknown function of the component AJP Request Handler. The manipulation as part of Zero Length leads to input validation. This vulnerability is referenced as CVE-2014-0095. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apache Tomcat 8.0.0/8.0.1/8.0.3 (Application Server Software). This issue affects an unknown functionality of the component AJP Request Handler. The manipulation as part of a Zero Length leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

java/org/apache/coyote/ajp/AbstractAjpProcessor.java in Apache Tomcat 8.x before 8.0.4 allows remote attackers to cause a denial of service (thread consumption) by using a "Content-Length: 0" AJP request to trigger a hang in request processing.

The issue has been introduced in 09/03/2013. The weakness was published 03/27/2014 as Fixed in Apache Tomcat 8.0.5 as confirmed release notes (Website). The advisory is shared at tomcat.apache.org. The public release has been coordinated with Apache. The identification of this vulnerability is CVE-2014-0095 since 12/03/2013. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A regression was introduced in 1519838 that caused AJP requests to hang if an explicit content length of zero was set on the request. The hanging request consumed a request processing thread which could lead to a denial of service.

After 3 months, there has been an exploit disclosed. The exploit is available at tomcat.apache.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 205 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 74248 (Apache Tomcat 8.0.x < 8.0.4 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Web Servers.

Upgrading to version 8.0.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The release notes contains the following remark:

This was fixed in revision 1578392.

The vulnerability is also documented in the databases at X-Force (93366), Tenable (74248), SecurityFocus (BID 67673†), OSVDB (107451†) and Secunia (SA59873†). Similar entries are available at VDB-13383, VDB-13384, VDB-13386 and VDB-13387. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74248
Nessus Name: Apache Tomcat 8.0.x < 8.0.4 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Tomcat 8.0.5

Timelineinfo

09/03/2013 🔍
12/03/2013 +91 days 🔍
03/03/2014 +90 days 🔍
03/27/2014 +24 days 🔍
03/27/2014 +0 days 🔍
05/27/2014 +61 days 🔍
05/27/2014 +0 days 🔍
05/27/2014 +0 days 🔍
05/27/2014 +0 days 🔍
05/28/2014 +1 days 🔍
05/29/2014 +1 days 🔍
05/31/2014 +2 days 🔍
07/11/2014 +41 days 🔍
06/20/2021 +2536 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: Fixed in Apache Tomcat 8.0.5
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-0095 (🔍)
GCVE (CVE): GCVE-0-2014-0095
GCVE (VulDB): GCVE-100-13385

IAVM: 🔍

X-Force: 93366 - Apache Tomcat AJP denial of service, Medium Risk
SecurityFocus: 67673 - Apache Tomcat CVE-2014-0095 AJP Request Remote Denial Of Service Vulnerability
Secunia: 59873 - IBM Rational Lifecycle Integration Adapters Multiple Apache Tomcat Vulnerabilities, Less Critical
OSVDB: 107451
SecurityTracker: 1030300 - Apache Tomcat AJP Request Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 44692 - Apache Tomcat 8.0.0-RC2 to 8.0.3 Remote DoS Vulnerability via AJP Requests, Medium

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

Entryinfo

Created: 05/28/2014 11:26
Updated: 06/20/2021 12:35
Changes: 05/28/2014 11:26 (85), 05/29/2017 09:00 (13), 06/20/2021 12:35 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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