CVE-2021-45096 Vulnerability Analysis & Exploit Details

CVE-2021-45096
Vulnerability Scoring

4.7
/10
Medium Risk

The vulnerability CVE-2021-45096 could compromise system integrity but typically requires user interaction to be exploited.

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: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: Required
    User interaction is necessary for successful exploitation.

CVE-2021-45096 Details

Status: Modified

Last updated: 🕡 21 Nov 2024, 06:31 UTC
Originally published on: 🕔 16 Dec 2021, 05:15 UTC

Time between publication and last update: 1071 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:R/S:C/C:L/I:N/A:N

CVE-2021-45096 Vulnerability Summary

CVE-2021-45096: KNIME Analytics Platform before 4.5.0 is vulnerable to XXE (external XML entity injection) via a crafted workflow file (.knwf), aka AP-17730.

Assessing the Risk of CVE-2021-45096

Access Complexity Graph

The exploitability of CVE-2021-45096 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-2021-45096

With low attack complexity and no required privileges, CVE-2021-45096 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-2021-45096, 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-2021-45096, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2021-45096 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: None
    CVE-2021-45096 poses no threat to data integrity.
  • Availability: None
    CVE-2021-45096 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: 0.2% (probability of exploit)

EPSS Percentile: 58.58% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 41.42% of others.

CVE-2021-45096 References

External References

CWE Common Weakness Enumeration

CWE-611

CAPEC Common Attack Pattern Enumeration and Classification

  • Data Serialization External Entities Blowup CAPEC-221 This attack takes advantage of the entity replacement property of certain data serialization languages (e.g., XML, YAML, etc.) where the value of the replacement is a URI. A well-crafted file could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.

Vulnerable Configurations

  • cpe:2.3:a:knime:knime_analytics_platform:-:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:-:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.3.4:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:3.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:3.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.1.4:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.3.4:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:knime:knime_analytics_platform:4.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:knime:knime_analytics_platform:4.4.4:*:*:*:*:*:*:*

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