CVE-2021-33884 Vulnerability Analysis & Exploit Details

CVE-2021-33884
Vulnerability Scoring

6.5
/10
High Risk

If left unpatched, CVE-2021-33884 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-33884 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:09 UTC
Originally published on: 🕛 25 Aug 2021, 12:15 UTC

Time between publication and last update: 1183 days

CVSS Release: version 3

CVSS3 Source

cve@mitre.org

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2021-33884 Vulnerability Summary

CVE-2021-33884: An Unrestricted Upload of File with Dangerous Type vulnerability in B. Braun SpaceCom2 prior to 012U000062 allows remote attackers to upload any files to the /tmp directory of the device through the webpage API. This can result in critical files being overwritten.

Assessing the Risk of CVE-2021-33884

Access Complexity Graph

The exploitability of CVE-2021-33884 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-2021-33884

With low attack complexity and no required privileges, CVE-2021-33884 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2021-33884, 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-2021-33884, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2021-33884 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: Low
    Exploiting CVE-2021-33884 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2021-33884 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: 0.198% (probability of exploit)

EPSS Percentile: 58.43% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 41.57% of others.

CVE-2021-33884 References

External References

CWE Common Weakness Enumeration

CWE-434

CAPEC Common Attack Pattern Enumeration and Classification

  • Accessing Functionality Not Properly Constrained by ACLs CAPEC-1 In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

Vulnerable Configurations

  • cpe:2.3:o:bbraun:spacecom2:-:*:*:*:*:*:*:*
    cpe:2.3:o:bbraun:spacecom2:-:*:*:*:*:*:*:*
  • cpe:2.3:h:bbraun:infusomat_large_volume_pump_871305u:-:*:*:*:*:*:*:*
    cpe:2.3:h:bbraun:infusomat_large_volume_pump_871305u:-:*:*:*:*:*:*:*
  • cpe:2.3:h:bbraun:spacestation_8713142u:-:*:*:*:*:*:*:*
    cpe:2.3:h:bbraun:spacestation_8713142u:-:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2021-33884: 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-2025-3809 – The Debug Log Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the auto-refresh debug log in all versions up to, and i...
  • CVE-2025-2111 – The Insert Headers And Footers plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.1. This i...
  • CVE-2024-13926 – The WP-Syntax WordPress plugin through 1.2 does not properly handle input, allowing an attacker to create a post containing a large number of tags,...
  • CVE-2025-3103 – The CLEVER - HTML5 Radio Player With History - Shoutcast and Icecast - Elementor Widget Addon plugin for WordPress is vulnerable to arbitrary file ...
  • CVE-2025-3275 – The Themesflat Addons For Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the TF E Slider widget in all versions up...