ET WEB_SPECIFIC_APPS Fortigate FortiOS Invalid HTTP Chunk Length (CVE-2024-21762) Vulnerability Scan Attempt

7.0.3 5.0SID: 2051765Rev: 2Enabled48 views

Fileemerging-web_specific_apps.rules

CreatedMarch 22, 2024

UpdatedMay 5, 2024

Classificationtrojan-activity

alert http1 $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Fortigate FortiOS Invalid HTTP Chunk Length (CVE-2024-21762) Vulnerability Scan Attempt"; flow:established,to_server; content:"|0d 0a 0d 0a|0000000000000000FF|0d 0a 0d 0a|"; fast_pattern; http.method; content:"POST"; http.uri; content:"/remote/"; http.header; content:"Transfer-Encoding|3a 20|chunked"; reference:url,github.com/BishopFox/cve-2024-21762-check; reference:cve,2024-21762; classtype:trojan-activity; sid:2051765; rev:2; metadata:affected_product Fortigate, attack_target Networking_Equipment, tls_state TLSDecrypt, created_at 2024_03_22, cve CVE_2024_21762, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, updated_at 2024_05_05, reviewed_at 2024_10_03; target:dest_ip;)

References

url	github.com/BishopFox/cve-2024-21762-check
cve	2024-21762

Metadata

affected productFortigate

attack targetNetworking_Equipment

tls stateTLSDecrypt

created at2024_03_22

cve

CVE-2024-21762

deploymentSSLDecrypt

performance impactLow

confidenceHigh

signature severityMajor

tagCISA_KEV

updated at2024_05_05

reviewed at2024_10_03

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