CVE-2020-17470
CVSS V2 Medium 5
CVSS V3 Medium 5.3
Description
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.
Overview
- CVE ID
- CVE-2020-17470
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-11T23:15:13
- Last Modified Date
- 2021-07-21T11:39:23
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:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5.3
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 1.4
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-2020-17470 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17470 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:03:09 | Added to TrackCVE | |||
| 2022-12-05 18:07:01 | 2020-12-11T23:15Z | 2020-12-11T23:15:13 | CVE Published Date | updated |
| 2022-12-05 18:07:01 | 2021-07-21T11:39:23 | CVE Modified Date | updated | |
| 2022-12-05 18:07:01 | Analyzed | Vulnerability Status | updated |