""ET WEB_CLIENT Possible HTTP 503 XSS Attempt (External Source)""
SID: 2010527
Revision: 6
Class Type: web-application-attack
Metadata: affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_09_27
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: from_server,established
Contents:
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Value: "503"
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Value: "Service Unavailable"
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Value: "<script" Depth: 280
Within:
PCRE:
Special Options:
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http_stat_code
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nocase
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file_data
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nocase