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GHSA-q6x7-f33r-3wxx CVE-2016-6797

Incorrect Authorization in Apache Tomcat

High Maven
Severity
7.5 / 10
High · CVSS 3.1
Exploit chance (EPSS)
8.07%
Chance of exploitation in the next 30 days. Higher than 94.80% of scored vulnerabilities.
Known exploited
No
Not in CISA's catalog
Weakness
CWE-863 Incorrect Authorization
Fix
9.0.0.M10
Upgrade org.apache.tomcat:tomcat to this version or later

Description

The ResourceLinkFactory implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not limit web application access to global JNDI resources to those resources explicitly linked to the web application. Therefore, it was possible for a web application to access any global JNDI resource whether an explicit ResourceLink had been configured or not.

Affected versions

Maven

PackageVulnerableFixed in
org.apache.tomcat:tomcat
>= 9.0.0.M1, < 9.0.0.M10
9.0.0.M10
org.apache.tomcat:tomcat
>= 8.5.0, < 8.5.5
8.5.5
org.apache.tomcat:tomcat
>= 8.0.0, < 8.0.37
8.0.37
org.apache.tomcat:tomcat
>= 7.0.0, < 7.0.72
7.0.72

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

org.apache.tomcat:tomcat Maven → 9.0.0.M10

maven
<dependency><groupId>org.apache.tomcat</groupId><artifactId>tomcat</artifactId><version>9.0.0.M10</version></dependency>
gradle
implementation("org.apache.tomcat:tomcat:9.0.0.M10")

Severity breakdown

CVSS 3.1 7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Weakness

CWE-863: Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

How to prevent it
  • Architecture and Design: Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
  • Architecture and Design: Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
  • Architecture and Design: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
  • Architecture and Design: For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page. One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
  • System Configuration, Installation: Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.

References

Advisories

Packages

Other links

Timeline

  1. Published
  2. Last updated by the source
  3. Latest EPSS score
AdvisorySeverityWhy it's related
GHSA-69r9-qgr7-g2wj
Apache Tomcat Missing Encryption of Sensitive Data vulnerability
High Known exploited Also affects org.apache.tomcat:tomcat
GHSA-h3x4-894j-xpx5
Apache Tomcat's FORM authentication process has an Incorrect Authorization vulnerability
Critical Also affects org.apache.tomcat:tomcat
GHSA-9xv2-5v5q-p794
Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability
Critical Also affects org.apache.tomcat:tomcat
GHSA-gcx9-497g-6cp6
Apache Tomcat has an Improper Access Control, Incorrect Authorization vulnerability
Critical Also affects org.apache.tomcat:tomcat
GHSA-5m62-pw8w-7w9f
Apache Tomcat - Security constraints not correctly applied
Critical Also affects org.apache.tomcat:tomcat
GHSA-9m89-8frq-c98c
Apache Tomcat - AJP secret compared in non-constant time
Low Also affects org.apache.tomcat:tomcat
GHSA-5mp6-jrq3-r938
Apache Tomcat: LockOutRealm treats user names as case-sensitive
High Also affects org.apache.tomcat:tomcat
GHSA-h6fc-48rj-7qqh
Apache Tomcat - Digest authenticator will authenticate any unknown user
Critical Also affects org.apache.tomcat:tomcat
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