CVE-2020-17467
CVSS V2 Medium 6.4
CVSS V3 Critical 9.1
Description
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.
Overview
- CVE ID
- CVE-2020-17467
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-11T23:15:13
- Last Modified Date
- 2020-12-18T02:23:35
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:fnet_project:fnet:*:*:*:*:*:*:*:* | 1 | OR | 4.6.4 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.1
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| 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 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-17467 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17467 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:29:53 | Added to TrackCVE | |||
| 2022-12-05 18:06:49 | 2020-12-11T23:15Z | 2020-12-11T23:15:13 | CVE Published Date | updated |
| 2022-12-05 18:06:49 | 2020-12-18T02:23:35 | CVE Modified Date | updated | |
| 2022-12-05 18:06:49 | Analyzed | Vulnerability Status | updated |