In OpenWrt 19.07.x before 19.07.7, when IPv6 is used, a routing loop can occur that generates excessive network traffic between an affected device and its upstream ISP's router. This occurs when a link prefix route points to a point-to-point link, a destination IPv6 address belongs to the prefix and is not a local IPv6 address, and a router advertisement is received with at least one global unique IPv6 prefix for which the on-link flag is set. This affects the netifd and odhcp6c packages.
References
Link | Resource |
---|---|
https://openwrt.org/advisory/2021-02-02-1 | Vendor Advisory |
Configurations
Information
Published : 2021-02-07 15:15
Updated : 2021-02-11 07:29
NVD link : CVE-2021-22161
Mitre link : CVE-2021-22161
JSON object : View
CWE
CWE-835
Loop with Unreachable Exit Condition ('Infinite Loop')
Products Affected
openwrt
- openwrt