Possible SonicWall SMA100 Arbitrary File Read via Apache RewriteRule Path Truncation (via webserver)

PremiumReviewedSigma · High · v1
Category
webserver
Author
HuntRule
Published
2026-11-02
Updated
2026-11-02

ATT&CK techniques

Initial Access
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects exploitation of SonicWall SMA100 CVE-2024-38475 where a crafted request appends an encoded question mark and a fixed css suffix to truncate the Apache RewriteRule and read arbitrary files such as the session database. The literal marker is a strong indicator of the mod_rewrite abuse.

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Possible SonicWall SMA100 Arbitrary File Read via Apache RewriteRule Path Truncation (via webserver)
Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.