Apache Tomcat up to 6.0.35/7.0.29 FORM Authentication RealmBase.java access control

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.
5.7$0-$5k0.00

A vulnerability classified as critical has been found in Apache Tomcat up to 6.0.35/7.0.29 (Application Server Software). Affected is an unknown code of the file org/apache/catalina/realm/RealmBase.java of the component FORM Authentication Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

org/apache/catalina/realm/RealmBase.java in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.30, when FORM authentication is used, allows remote attackers to bypass security-constraint checks by leveraging a previous setUserPrincipal call and then placing /j_security_check at the end of a URI.

The weakness was shared 12/04/2012 with Tomcat Security Team as confirmed changelog entry (Website). The advisory is available at tomcat.apache.org. The vendor cooperated in the coordination of the public release. This vulnerability is traded as CVE-2012-3546 since 06/14/2012. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 68790 (Oracle Linux 5 : tomcat5 (ELSA-2013-0640)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux 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 7.0.30 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80517), Tenable (68790), SecurityFocus (BID 56812†), OSVDB (88094†) and Secunia (SA51693†). The entries VDB-7073, VDB-7075, VDB-63089 and VDB-62933 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

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: 68790
Nessus Name: Oracle Linux 5 : tomcat5 (ELSA-2013-0640)
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: 🔍

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

Upgrade: Tomcat 6.0.36/7.0.30

Timelineinfo

06/14/2012 🔍
10/19/2012 +127 days 🔍
12/04/2012 +46 days 🔍
12/04/2012 +0 days 🔍
12/04/2012 +0 days 🔍
12/04/2012 +0 days 🔍
12/04/2012 +0 days 🔍
12/05/2012 +1 days 🔍
12/06/2012 +1 days 🔍
12/10/2012 +4 days 🔍
12/19/2012 +9 days 🔍
12/28/2012 +9 days 🔍
07/12/2013 +196 days 🔍
04/19/2021 +2838 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: tomcat.apache.org
Organization: Tomcat Security Team
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3546 (🔍)
GCVE (CVE): GCVE-0-2012-3546
GCVE (VulDB): GCVE-100-7074

OVAL: 🔍

X-Force: 80517 - Apache Tomcat FormAuthenticator security bypass, Medium Risk
SecurityFocus: 56812 - Apache Tomcat CVE-2012-3546 Security Bypass Vulnerability
Secunia: 51693 - SUSE update for tomcat, Moderately Critical
OSVDB: 88094
SecurityTracker: 1027833 - Apache Tomcat Bug Lets Remote Users Bypass Security Constraints
Vulnerability Center: 37603 - Apache Tomcat 6.0.0 Through 6.0.35 and 7.0.0 Through 7.0.29 Remote Security Bypass Vulnerability, Medium

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

Entryinfo

Created: 12/06/2012 03:21 PM
Updated: 04/19/2021 06:05 PM
Changes: 12/06/2012 03:21 PM (96), 04/22/2017 12:59 PM (1), 04/19/2021 06:05 PM (3)
Complete: 🔍
Committer:
Cache ID: 18:B59:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!