CVE-2017-15896 Security Vulnerability & Exploit Details

CVE-2017-15896
Vulnerability Scoring

9.1

/10

Critical Risk

As a catastrophic security flaw, CVE-2017-15896 has severe implications, demanding immediate intervention.

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-2017-15896 Details

Status: Modified

Last updated: 🕒 21 Nov 2024, 03:15 UTC
Originally published on: 🕘 11 Dec 2017, 21:29 UTC

Time between publication and last update: 2536 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:N/S:U/C:H/I:H/A:N

CVE-2017-15896 Vulnerability Summary

CVE-2017-15896: Node.js was affected by OpenSSL vulnerability CVE-2017-3737 in regards to the use of SSL_read() due to TLS handshake failure. The result was that an active network attacker could send application data to Node.js using the TLS or HTTP2 modules in a way that bypassed TLS authentication and encryption.

Assessing the Risk of CVE-2017-15896

Access Complexity Graph

The exploitability of CVE-2017-15896 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-2017-15896

With low attack complexity and no required privileges, CVE-2017-15896 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-2017-15896, 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-2017-15896, 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-2017-15896 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2017-15896 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: None
CVE-2017-15896 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: 0.118% (probability of exploit)

EPSS Percentile: 47.43% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 52.57% of others.

CVE-2017-15896 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

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CVE-2017-15896 Vulnerability Scoring