Unauthenticated remote code execution
Published 2023-07-19 18:15:12
Updated 2024-06-27 18:53:09
View at NVD,   CVE.org
Vulnerability category: Execute code

CVE-2023-3519 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
CISA required action:
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA description:
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
Notes:
https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467
Added on 2023-07-19 Action due date 2023-08-09

Exploit prediction scoring system (EPSS) score for CVE-2023-3519

96.53%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 100 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2023-3519

  • Citrix ADC (NetScaler) Forms SSO Target RCE
    Disclosure Date: 2023-07-18
    First seen: 2023-09-11
    exploit/freebsd/http/citrix_formssso_target_rce
    A vulnerability exists within Citrix ADC that allows an unauthenticated attacker to trigger a stack buffer overflow of the nsppe process by making a specially crafted HTTP GET request. Successful exploitation results in remote code execution as root. Authors:

CVSS scores for CVE-2023-3519

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
Citrix Systems, Inc.

CWE ids for CVE-2023-3519

  • The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secure@citrix.com (Secondary)

References for CVE-2023-3519

Products affected by CVE-2023-3519

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