CVE-2022-43681

Disclosed 2023-05-03

Description

An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4. When sending a malformed BGP OPEN message that ends with the option length octet (or the option length word, in case of an extended OPEN message), the FRR code reads of out of the bounds of the packet, throwing a SIGABRT signal and exiting. This results in a bgpd daemon restart, causing a Denial-of-Service condition.

Severity

Medium

Affected FRR Versions

< 8.4

Versions prior to 8.4 are end-of-life and no longer receive security updates.

References

URL	Source
https://github.com/FRRouting/frr/commit/1117baca3c592877a4d8a13ed6a1d9bd83977487	GitHub
https://github.com/FRRouting/frr/commit/3e46b43e3788f0f87bae56a86b54d412b4710286	GitHub
https://github.com/FRRouting/frr/commit/766eec1b7accffe2c04a5c9ebb14e9f487bb9f78	GitHub

Git Fixes

766eec1b7accffe2c04a5c9ebb14e9f487bb9f78
6c4ca9812976596bf8b5226600269fc4031f1422
1fc08fbdb0bcf292ffd16a39f560732bda489790

Raw Data

CVE-2022-43681.cve.json — CVE record (JSON)
CVE-2022-43681.frr.json — FRR-specific data (JSON)