Cisco BGP Authentication Failures — Sigma Rule

Rule metadata and linked tags

Author: Tim Brown. Source status: test; severity: low. Source dates: 2023-01-09 / 2023-01-23.

{
  "product": "cisco",
  "service": "bgp",
  "definition": "Requirements: cisco bgp logs need to be enabled and ingested"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3154d81899425bc0bb13f15965190e59b91a6766b45c2530d39fcbfbab26f1d4

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Cisco BGP Authentication Failures
id: 56fa3cd6-f8d6-4520-a8c7-607292971886
status: test
description: Detects BGP failures which may be indicative of brute force attacks to manipulate routing
references:
    - https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf
author: Tim Brown
date: 2023-01-09
modified: 2023-01-23
tags:
    - attack.initial-access
    - attack.persistence
    - attack.privilege-escalation
    - attack.credential-access
    - attack.collection
    - attack.stealth
    - attack.t1078
    - attack.t1110
    - attack.t1557
logsource:
    product: cisco
    service: bgp
    definition: 'Requirements: cisco bgp logs need to be enabled and ingested'
detection:
    keywords_bgp_cisco:
        '|all':
            - ':179' # Protocol
            - 'IP-TCP-3-BADAUTH'
    condition: keywords_bgp_cisco
falsepositives:
    - Unlikely. Except due to misconfigurations
level: low

Original YAML and metadata in JSON

False positives

• Unlikely. Except due to misconfigurations

Source references

• https://www.blackhat.com/presentations/bh-usa-03/bh-us-03-convery-franz-v3.pdf