""ET EXPLOIT ownCloud Remote Improper Authentication Attempt (CVE-2023-49105)""

SID: 2049617

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2023_12_07, cve CVE_2023_49105, deployment Perimeter, deployment Internal, deployment SSLDecrypt, signature_severity Major, tag Exploit, updated_at 2024_06_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

  • cve

  • 2023-49105

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: !"OPTIONS"

  • Value: "/remote.php/dav"

  • Value: "OC-Credential="

  • Value: "OC-Verb="

  • Value: "OC-Expires="

  • Value: "OC-Date="

  • Value: "OC-Signature="

Within:

PCRE: "/OC-Signature=[a-f0-9]{64}(?:&|$)/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

  • nocase

  • http_uri

  • nocase

  • http_uri

  • nocase

  • http_uri

  • nocase

  • http_uri

  • nocase

source