ET WEB_SPECIFIC_APPS Citrix Netscaler ADC & Gateway Unauthenticated Out-of-Bounds Memory Read (CVE-2023-6549)

SID: 2063271Rev: 18 views

Sourceet/open

CreatedJuly 2, 2025

UpdatedJuly 2, 2025

Classificationweb-application-attack

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Citrix Netscaler ADC & Gateway Unauthenticated Out-of-Bounds Memory Read (CVE-2023-6549)"; flow:established,to_server; http.uri; content:"/nf/auth/startwebview.do"; fast_pattern; http.host; isdataat:5394; reference:url,bishopfox.com/blog/netscaler-adc-and-gateway-advisory; reference:cve,2023-6549; classtype:web-application-attack; sid:2063271; rev:1; metadata:affected_product Citrix, attack_target Server, created_at 2025_07_02, cve CVE_2023_6549, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2025_07_02, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

References

url	bishopfox.com/blog/netscaler-adc-and-gateway-advisory
cve	2023-6549

Metadata

affected productCitrix

attack targetServer

created at2025_07_02

cveCVE-2023-6549

deploymentInternal

confidenceHigh

signature severityMajor

tagExploit

updated at2025_07_02

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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