CVE Vulnerability

CVE-2020-17467

An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check for '' 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.

6.4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

Scope

9.1 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 Third Party Advisory US Government Resource
http://fnet.sourceforge.net/manual/fnet_history.html Release Notes Third Party Advisory
https://www.kb.cert.org/vuls/id/815128 Third Party Advisory US Government Resource
Configurations

Configuration 1

cpe:2.3:a:fnet_project:fnet:*:*:*:*:*:*:*:*
Information

Published : 2020-12-11 11:15

Updated : 2020-12-18 02:23

NVD link : CVE-2020-17467

Mitre link : CVE-2020-17467

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read