Sensitive Information Disclosure in NetScaler ADC and NetScaler Gateway

CVE-2023-4966
7.5HIGH

Key Information

Vendor
Citrix
Status
NetScaler ADC 
NetScaler Gateway
Vendor
CVE Published:
10 October 2023

Badges

👾 Exploit Exists🔴 Public PoC🟣 EPSS 97%📰 News Worthy

Summary

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. 

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2023-4966 as being exploited and is known by the CISA as enabling ransomware campaigns.

The CISA's recommendation is: 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.

Affected Version(s)

NetScaler ADC  < 8.50

NetScaler ADC  < 49.15

NetScaler ADC  < 92.19

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

News Articles

EPSS Score

97% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • First article discovered by The Cyber Express

  • 👾

    Exploit exists.

  • Vulnerability published.

  • Vulnerability Reserved.

Collectors

NVD DatabaseMitre DatabaseCISA Database9 Proof of Concept(s)4 News Article(s)
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