CVE-2023-6549 · netVigilance record NV24-0014
Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow
past due
What to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA deadline 2024-02-07 · passed 2 years 7 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
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.
Who is affected
Citrix NetScaler ADC and NetScaler Gateway. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-119.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 2 years 7 months ago
Sources
- NVD entry for CVE-2023-6549 nvd.nist.gov/vuln/detail/CVE-2023-6549
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- support.citrix.com support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2023-6549