CVE-2021-36489 Security Vulnerability & Exploit Details

CVE-2021-36489
Vulnerability Scoring

6.5

/10

High Risk

If left unpatched, CVE-2021-36489 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: Required
User interaction is necessary for successful exploitation.

CVE-2021-36489 Details

Status: Modified

Last updated: 🕕 21 Nov 2024, 06:13 UTC
Originally published on: 🕕 03 Feb 2023, 18:15 UTC

Time between publication and last update: 656 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2021-36489 Vulnerability Summary

CVE-2021-36489: Buffer Overflow vulnerability in Allegro through 5.2.6 allows attackers to cause a denial of service via crafted PCX/TGA/BMP files to allegro_image addon.

Assessing the Risk of CVE-2021-36489

Access Complexity Graph

The exploitability of CVE-2021-36489 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-2021-36489

With low attack complexity and no required privileges, CVE-2021-36489 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-2021-36489, 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-2021-36489, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: None
CVE-2021-36489 has no significant impact on data confidentiality.
Integrity: None
CVE-2021-36489 poses no threat to data integrity.
Availability: High
CVE-2021-36489 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: 0.089% (probability of exploit)

EPSS Percentile: 40.4% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 59.6% of others.

CVE-2021-36489 References

External References

CWE Common Weakness Enumeration

CWE-787

Vulnerable Configurations

cpe:2.3:a:liballeg:allegro:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.3.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.3.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:-:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:-:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:rc1:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.0:rc2:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.7.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.7.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.9.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.9.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.10.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.10.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.12:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.12:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.13:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.13:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.14:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.14:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.15:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.15:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.15.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.15.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.16:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.16:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.17:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.17:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.18:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.18:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.19:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.19:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.20:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.20:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.21:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.21:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.22:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:4.9.22:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.0:rc5:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.0.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.2:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.3:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.4:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.5:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.6:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.7:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.8:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.9:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.10:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.11:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.13.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.13.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.13.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.1.13.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.1.1:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:liballeg:allegro:5.2.5.0:*:*:*:*:*:*:*

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CVE-2021-36489 Vulnerability Scoring