CVE-2021-29469 Security Vulnerability & Exploit Details

CVE-2021-29469
Vulnerability Scoring

5.3

/10

Significant Risk

Security assessments indicate that CVE-2021-29469 presents a notable risk, potentially requiring prompt mitigation.

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-2021-29469 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:01 UTC
Originally published on: 🕕 23 Apr 2021, 18:15 UTC

Time between publication and last update: 1307 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2021-29469 Vulnerability Summary

CVE-2021-29469: Node-redis is a Node.js Redis client. Before version 3.1.1, when a client is in monitoring mode, the regex begin used to detected monitor messages could cause exponential backtracking on some strings. This issue could lead to a denial of service. The issue is patched in version 3.1.1.

Assessing the Risk of CVE-2021-29469

Access Complexity Graph

The exploitability of CVE-2021-29469 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-2021-29469

This vulnerability, CVE-2021-29469, 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-2021-29469, 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-2021-29469, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2021-29469 has no significant impact on data confidentiality.
Integrity: None
CVE-2021-29469 poses no threat to data integrity.
Availability: High
CVE-2021-29469 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.24% (probability of exploit)

EPSS Percentile: 62.3% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 37.7% of others.

CVE-2021-29469 References

External References

CWE Common Weakness Enumeration

NVD-CWE-Other

Vulnerable Configurations

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cpe:2.3:a:redis.js:redis:-:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:.2.0.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.0.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.0.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.4:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.4:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.2.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.3.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.3.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.4.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.4.0:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:.2.4.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.4.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.4.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.5.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.0-2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.4:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.4:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.6.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.7.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.7.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.7.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.7.1:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.8.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:.2.8.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.5:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.6:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.6:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.7:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.7:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.9:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.3.9:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.4.0:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.4.1:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.5.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.5.3:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.5.4:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.5.5:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.8.3:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:0.8.4:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.9.0:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:0.12.0:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:1.0.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:1.0.0:*:*:*:*:node.js:*:*
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cpe:2.3:a:redis.js:redis:3.0.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:3.0.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:3.0.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:3.0.2:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:3.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:redis.js:redis:3.1.0:*:*:*:*:node.js:*:*

Protect Your Infrastructure against CVE-2021-29469: Combat Critical CVE Threats

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CVE-2021-29469 Vulnerability Scoring