Out-of-bounds Read in Butok Fnet
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 class: Buffer Overflow
EPSS: 0.030 (85.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Butok Fnet
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2020-17468?
- CVE-2020-17468 is a high-severity vulnerability in Butok Fnet, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2020-12-11.
- How severe is CVE-2020-17468?
- High severity. CVSS v3 base score is 7.5 out of 10.