Vulnerability Details : CVE-2020-17468
An issue was discovered in FNET through 4.6.4. The code for processing the hop-by-hop header (in the IPv6 extension headers) doesn't check for a valid length of an extension header, and therefore an out-of-bounds read can occur in _fnet_ip6_ext_header_handler_options in fnet_ip6.c, leading to Denial-of-Service.
Vulnerability category: Denial of service
Products affected by CVE-2020-17468
- cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-17468
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 53 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-17468
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-17468
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-17468
-
https://www.kb.cert.org/vuls/id/815128
VU#815128 - Embedded TCP/IP stacks have memory corruption vulnerabilitiesThird Party Advisory;US Government Resource
-
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
Multiple Embedded TCP/IP Stacks | CISAThird Party Advisory;US Government Resource
-
http://fnet.sourceforge.net/manual/fnet_history.html
Embedded TCP/IP stack: FNET Change LogRelease Notes;Third Party Advisory
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