Vulnerabilities
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CVE Vulnerabilities

CVE-2016-6802

Improper Access Control

Published: Sep 20, 2016 | Modified: Apr 12, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
6.8 MODERATE
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V3
5.6 MODERATE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2016-6802
CWEhttps://cwe.mitre.org/data/definitions/284.html

Apache Shiro before 1.3.2 allows attackers to bypass intended servlet filters and gain access by leveraging use of a non-root servlet context path.

Weakness

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

NameVendorStart VersionEnd Version
ShiroApache1.3.1 (including)1.3.1 (including)
ShiroUbuntuartful*
ShiroUbuntuesm-apps/xenial*
ShiroUbuntuupstream*
ShiroUbuntuxenial*
ShiroUbuntuyakkety*
ShiroUbuntuzesty*

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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