CVE-2023-4966
critical · 9.4Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.
A public exploit / detection template exists
Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →
Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Weaknesses
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| citrix | netscaler_application_delivery_controller | >= 12.1, < 12.1-55.300 |
| citrix | netscaler_application_delivery_controller | >= 12.1, < 12.1-55.300 |
| citrix | netscaler_application_delivery_controller | >= 13.0, < 13.0-92.19 |
| citrix | netscaler_application_delivery_controller | >= 13.1, < 13.1-37.164 |
| citrix | netscaler_application_delivery_controller | >= 13.1, < 13.1-49.15 |
| citrix | netscaler_application_delivery_controller | >= 14.1, < 14.1-8.50 |
| citrix | netscaler_gateway | >= 13.0, < 13.0-92.19 |
| citrix | netscaler_gateway | >= 13.1, < 13.1-49.15 |
| citrix | netscaler_gateway | >= 14.1, < 14.1-8.50 |
Check a specific version with /api/v1/cve/match.
References
- http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html
- https://support.citrix.com/article/CTX579459
- http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html
- https://support.citrix.com/article/CTX579459
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2023-4966