CVE-2020-17467: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 12-10-2023 Published: 11-12-2020

CVE-2020-17467
Vulnerability Scoring

9.1
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality: HIGH IMPACT
  • Integrity:
  • Availability: HIGH IMPACT

CVE-2020-17467 Vulnerability Summary

An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check for '\0' termination. Therefore, the deduced length of the hostname doesn't reflect the correct length of the actual data. This may lead to Information Disclosure in _fnet_llmnr_poll in fnet_llmnr.c during a response to a malicious request of the DNS class IN.

Access Complexity Graph for CVE-2020-17467

Impact Analysis for CVE-2020-17467

CVE-2020-17467: Detailed Information and External References

EPSS

0.00393

EPSS %

0.73352

References

0.00393

CWE

CWE-125

CAPEC

0.00393

  • Overread Buffers: An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

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:*:*:*:*:*:*:*

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:N/A:H

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