CVE-2023-6549 — Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
CVE-2023-6549: Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Citrix |
| Product | NetScaler ADC and NetScaler Gateway |
| Date added | 2024-01-17 |
| Due date | 2024-02-07 |
| Ransomware campaign use | Unknown |
Description
Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for a denial-of-service when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549; https://nvd.nist.gov/vuln/detail/CVE-2023-6549
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6549
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog