Vulnerability · Published May 3, 2023 · Assigned by mitre
CVE-2022-43681
Medium 6.5
In plain English
A medium-severity security flaw in the frr package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | frr | 8.3.1-11.el9_3.alma.1 | ALSA-2023:6434 |
| AlmaLinux:9 | frr-selinux | 8.3.1-11.el9_3.alma.1 | ALSA-2023:6434 |
| Debian:12 | frr | 8.4.1-1 | DEBIAN-CVE-2022-43681 |
| Debian:13 | frr | 8.4.1-1 | DEBIAN-CVE-2022-43681 |
| Debian:14 | frr | 8.4.1-1 | DEBIAN-CVE-2022-43681 |
| Ubuntu:22.04:LTS | frr | 8.1-1ubuntu1.3 | UBUNTU-CVE-2022-43681 |
Affected products (as reported)
References
- https://forescout.com
- DSA-5495 vendor-advisory
- [debian-lts-announce] 20230919 [SECURITY] [DLA 3573-1] frr security update mailing-list