CVE Vulnerabilities

CVE-2017-12169

Exposure of Sensitive Information to an Unauthorized Actor

Published: Jan 10, 2018 | Modified: Apr 17, 2018
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N
RedHat/V2
RedHat/V3
2.7 LOW
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Ubuntu
LOW

It was found that FreeIPA 4.2.0 and later could disclose password hashes to users having the System: Read Stage Users permission. A remote, authenticated attacker could potentially use this flaw to disclose the password hashes belonging to Stage Users. This security issue does not result in disclosure of password hashes belonging to active standard users. NOTE: some developers feel that this report is a suggestion for a design change to Stage User activation, not a statement of a vulnerability.

Weakness

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Software

Name Vendor Start Version End Version
Freeipa Freeipa 4.2.0 (including) *
Freeipa Ubuntu artful *
Freeipa Ubuntu bionic *
Freeipa Ubuntu cosmic *
Freeipa Ubuntu devel *
Freeipa Ubuntu disco *
Freeipa Ubuntu eoan *
Freeipa Ubuntu esm-apps/bionic *
Freeipa Ubuntu esm-apps/focal *
Freeipa Ubuntu esm-apps/jammy *
Freeipa Ubuntu esm-apps/noble *
Freeipa Ubuntu esm-apps/xenial *
Freeipa Ubuntu esm-infra-legacy/trusty *
Freeipa Ubuntu focal *
Freeipa Ubuntu groovy *
Freeipa Ubuntu hirsute *
Freeipa Ubuntu impish *
Freeipa Ubuntu jammy *
Freeipa Ubuntu kinetic *
Freeipa Ubuntu lunar *
Freeipa Ubuntu mantic *
Freeipa Ubuntu noble *
Freeipa Ubuntu oracular *
Freeipa Ubuntu trusty *
Freeipa Ubuntu trusty/esm *
Freeipa Ubuntu upstream *
Freeipa Ubuntu xenial *
Freeipa Ubuntu zesty *

Extended Description

There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:

Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:

Information exposures can occur in different ways:

It is common practice to describe any loss of confidentiality as an “information exposure,” but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.

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