CVE-2020-17470 Vulnerability Analysis & Exploit Details

CVE-2020-17470
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2020-17470 presents a notable risk, potentially requiring prompt mitigation.

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-2020-17470 Details

Status: Analyzed

Last updated: 🕡 12 Oct 2023, 18:31 UTC
Originally published on: 🕚 11 Dec 2020, 23:15 UTC

Time between publication and last update: 1034 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:N/I:L/A:N

CVE-2020-17470 Vulnerability Summary

CVE-2020-17470: An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs (they are always set to 1 in _fnet_dns_poll in fnet_dns.c). This significantly simplifies DNS cache poisoning attacks.

Assessing the Risk of CVE-2020-17470

Access Complexity Graph

The exploitability of CVE-2020-17470 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-2020-17470

With low attack complexity and no required privileges, CVE-2020-17470 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-2020-17470, 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-2020-17470, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2020-17470 has no significant impact on data confidentiality.
  • Integrity: Low
    Exploiting CVE-2020-17470 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2020-17470 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: 0.12% (probability of exploit)

EPSS Percentile: 47.77% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 52.23% of others.

CVE-2020-17470 References

External References

CWE Common Weakness Enumeration

CWE-330

CAPEC Common Attack Pattern Enumeration and Classification

  • Brute Force CAPEC-112 In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset.
  • Signature Spoofing by Key Recreation CAPEC-485 An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
  • Session Credential Falsification through Prediction CAPEC-59 This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Vulnerable Configurations

  • cpe:2.3:a:butok:fnet:-:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:-:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.7.5:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.7.6:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.7.6:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:0.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:0.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:1.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:1.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.4:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.7.5:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:2.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:2.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.3:-:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.3:-:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.3:pre:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.3:pre:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.3:preview:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.3:preview:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.3:updated:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.3:updated:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:3.9.4:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:3.9.4:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:butok:fnet:4.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:butok:fnet:4.6.4:*:*:*:*:*:*:*

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