CVE-2020-17469

An issue was discovered in FNET through 4.6.4. The code for IPv6 fragment reassembly tries to access a previous fragment starting from a network incoming fragment that still doesn't have a reference to the previous one (which supposedly resides in the reassembly list). When faced with an incoming fragment that belongs to a non-empty fragment list, IPv6 reassembly must check that there are no empty holes between the fragments: this leads to an uninitialized pointer dereference in _fnet_ip6_reassembly in fnet_ip6.c, and causes Denial-of-Service.
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 : 2021-07-21 11:39


NVD link : CVE-2020-17469

Mitre link : CVE-2020-17469

Products Affected
No products.
CWE
CWE-824

Access of Uninitialized Pointer