CVE-2021-3684 Vulnerability Analysis & Exploit Details

CVE-2021-3684
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2021-3684 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-3684 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:22 UTC
Originally published on: 🕗 24 Mar 2023, 20:15 UTC

Time between publication and last update: 607 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2021-3684 Vulnerability Summary

CVE-2021-3684: A vulnerability was found in OpenShift Assisted Installer. During generation of the Discovery ISO, image pull secrets were leaked as plaintext in the installation logs. An authenticated user could exploit this by re-using the image pull secret to pull container images from the registry as the associated user.

Assessing the Risk of CVE-2021-3684

Access Complexity Graph

The exploitability of CVE-2021-3684 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2021-3684

CVE-2021-3684 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2021-3684, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2021-3684, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2021-3684 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2021-3684 poses no threat to data integrity.
  • Availability: None
    CVE-2021-3684 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.047% (probability of exploit)

EPSS Percentile: 20.28% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 79.72% of others.

CVE-2021-3684 References

External References

CWE Common Weakness Enumeration

CWE-532

CAPEC Common Attack Pattern Enumeration and Classification

  • Fuzzing for application mapping CAPEC-215 An attacker sends random, malformed, or otherwise unexpected messages to a target application and observes the application's log or error messages returned. The attacker does not initially know how a target will respond to individual messages but by attempting a large number of message variants they may find a variant that trigger's desired behavior. In this attack, the purpose of the fuzzing is to observe the application's log and error messages, although fuzzing a target can also sometimes cause the target to enter an unstable state, causing a crash.

Vulnerable Configurations

  • cpe:2.3:a:redhat:openshift_assisted_installer:-:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.4:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.4:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.5:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.9.5:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.10.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.11.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.12.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.12.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.14.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.15.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.16.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.17.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.18.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.19.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.4:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.20.4:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.21.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.4:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.22.4:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.23.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.23.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.23.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.23.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.3:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.24.3:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.25.1:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.25.1:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_assisted_installer:1.0.25.2:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_assisted_installer:1.0.25.2:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

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