CVE-2021-23556 Vulnerability Analysis & Exploit Details

CVE-2021-23556
Vulnerability Scoring

6.4
/10
High Risk

If left unpatched, CVE-2021-23556 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical 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-2021-23556 Details

Status: Modified

Last updated: 🕠 21 Nov 2024, 05:51 UTC
Originally published on: 🕛 17 Mar 2022, 12:15 UTC

Time between publication and last update: 979 days

CVSS Release: version 3

CVSS3 Source

report@snyk.io

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2021-23556 Vulnerability Summary

CVE-2021-23556: The package guake before 3.8.5 are vulnerable to Exposed Dangerous Method or Function due to the exposure of execute_command and execute_command_by_uuid methods via the d-bus interface, which makes it possible for a malicious user to run an arbitrary command via the d-bus method. **Note:** Exploitation requires the user to have installed another malicious program that will be able to send dbus signals or run terminal commands.

Assessing the Risk of CVE-2021-23556

Access Complexity Graph

The exploitability of CVE-2021-23556 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-2021-23556

This vulnerability, CVE-2021-23556, requires a high level of attack complexity and low privileges, making it difficult but not impossible to exploit. Organizations should ensure robust security configurations to mitigate 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-2021-23556, 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-2021-23556, 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-2021-23556 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: Low
    Exploiting CVE-2021-23556 may cause minor changes to data without severely impacting its accuracy.
  • Availability: Low
    CVE-2021-23556 may slightly degrade system performance without fully affecting service availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.281% (probability of exploit)

EPSS Percentile: 68.76% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 31.239999999999995% of others.

CVE-2021-23556 References

External References

CWE Common Weakness Enumeration

NVD-CWE-Other

Vulnerable Configurations

  • cpe:2.3:a:guake-project:guake:0.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.4.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.4.4:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.0:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.0:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.1:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.1:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.1:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.1:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.1:rc2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.1:rc2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.1:rc3:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.1:rc3:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.2:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.2:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.5.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.5.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.6.0:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.6.0:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.6.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.6.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.6.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.6.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.6.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.6.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.4:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.4:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.5:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.5:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.6:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.6:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.7:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.7:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.8:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.8:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.9:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.9:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.10:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.10:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.11:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.11:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.12:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.12:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.13:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.13:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:0.8.14:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:0.8.14:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:beta1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:beta1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:beta2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:beta2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha3:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha3:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha4:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha4:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha5:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha5:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.0:alpha6:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.0:alpha6:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.5:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.0.6:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.0:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.0:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.0:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.0:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.0:rc2:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.0:rc2:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.0:rc3:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.0:rc3:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.2:-:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.2:-:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.2:rc1:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.2:rc1:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.3:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.3:*:*:*:*:*:*:*
  • cpe:2.3:a:guake-project:guake:3.8.4:*:*:*:*:*:*:*
    cpe:2.3:a:guake-project:guake:3.8.4:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2021-23556: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-3800 – A vulnerability has been found in WCMS 11 and classified as critical. Affected by this vulnerability is an unknown functionality of the file app/co...
  • CVE-2025-3799 – A vulnerability, which was classified as critical, was found in WCMS 11. Affected is an unknown function of the file app/controllers/AnonymousContr...
  • CVE-2025-3798 – A vulnerability, which was classified as critical, has been found in WCMS 11. This issue affects the function sub of the file app/admin/AdvadminCon...
  • CVE-2025-3661 – The SB Chart block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and inclu...
  • CVE-2025-3404 – The Download Manager plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the savePackage func...