""ET EXPLOIT Jira Server/Data Center 8.4.0 Remote File Read Attempt (CVE-2021-26086) M1""

SID: 2038672

Revision: 1

Class Type: attempted-admin

Metadata: affected_product Atlassian, attack_target Web_Server, created_at 2022_08_30, cve CVE_2021_26086, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2022_08_30

Reference:

  • cve

  • 2021-26086

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/s/" Depth: 3

  • Value: "|2f 5f 2f 3b 2f|WEB|2d|INF"

  • Value: !"Referer|3a 20|"

Within: 25

PCRE: "/(?:web|decorators|seraph-config)\x2exml$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_header

source