69 lines
3.8 KiB
Plaintext
69 lines
3.8 KiB
Plaintext
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# WHP day-one enforce overrides for coraza-spoa.
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#
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# Global mode in config.yaml is SecRuleEngine DetectionOnly. The rule ID
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# ranges below are promoted to enforcement individually, chosen for very
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# low false-positive rate on the kinds of customer traffic seen on WHP
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# (WordPress, WooCommerce, Divi page builders).
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#
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# When bumping the upstream coraza-spoa pin (and thus the bundled CRS):
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# 1. Skim the CRS CHANGELOG for new/changed rules in these ID ranges.
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# 2. Verify they're still high-confidence before promoting the new image.
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# 3. Smoke-test in staging detect-only mode for 24h before flipping enforce.
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#
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# Per-customer false-positive tuning lives in a future per-customer
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# override mechanism; v1 is server-wide.
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# ---------------------------------------------------------------------------
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# 913xxx — Scanner User-Agents
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# (sqlmap, nikto, nmap-scripts, dirbuster, masscan, gobuster, ZAP, w3af, etc.)
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# Legitimate browsers and apps never send these UAs. Pure recon/exploit
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# tooling. Highest signal-to-noise rule family in CRS.
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# ---------------------------------------------------------------------------
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SecRuleUpdateActionById 913100-913199 "ctl:ruleEngine=On"
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# ---------------------------------------------------------------------------
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# 930120 — LFI: explicit traversal to sensitive system files
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# (/etc/passwd, /proc/self/, /.ssh/, /etc/shadow, /etc/group, etc.)
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# Unambiguous probe pattern; no legitimate site path leads here.
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# Note: 930xxx as a whole includes broader traversal patterns that can FP
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# on legitimate relative-path file browsers — keep those detect-only.
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# ---------------------------------------------------------------------------
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SecRuleUpdateActionById 930120 "ctl:ruleEngine=On"
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# ---------------------------------------------------------------------------
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# 932100-932160 — RCE: Unix shell command injection
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# Patterns like `; cat /etc/passwd`, `|whoami`, backtick `\`uname\``,
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# $(...) substitution, &&/|| chaining with shell builtins.
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# Don't appear in normal POST bodies, URL params, or headers. Targeting
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# these is unambiguous attempted command execution.
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# ---------------------------------------------------------------------------
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SecRuleUpdateActionById 932100-932160 "ctl:ruleEngine=On"
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# ---------------------------------------------------------------------------
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# 933170-933200 — PHP Webshell access patterns
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# Direct requests to known webshell paths: c99.php, r57.php, b374k.php,
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# wso.php, alfa.php, mini.php, etc. Almost universally reconnaissance
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# scanning for post-exploitation. Even legitimate WordPress installs
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# never serve these paths.
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# ---------------------------------------------------------------------------
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SecRuleUpdateActionById 933170-933200 "ctl:ruleEngine=On"
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# ---------------------------------------------------------------------------
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# 944100-944300 — Log4Shell / JNDI injection
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# `${jndi:ldap://}`, `${jndi:rmi://}`, and obfuscated variants thereof
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# in headers, query strings, or bodies. Even our PHP/Node stack isn't
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# vulnerable, but blocking at the edge keeps logs clean and protects
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# any future Java workloads.
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# ---------------------------------------------------------------------------
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SecRuleUpdateActionById 944100-944300 "ctl:ruleEngine=On"
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# ---------------------------------------------------------------------------
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# Rule families intentionally kept at DETECT-ONLY for v1 — high FP rate
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# on customer mix. Promote individually after observation:
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#
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# 941xxx (XSS) — Divi rich-text editor saves, TinyMCE submissions
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# 942xxx (SQLi) — WP admin queries reflected in params
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# 920xxx (Protocol) — Cloudflare-in-front sometimes injects odd headers
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# 950xxx-953xxx — Data leakage / backup-file disclosure (mixed FP)
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# ---------------------------------------------------------------------------
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