🕵️‍♂️ SonicWall SMA1000 (CVE-2026-15409): SSRF to Erlang RCE chained into automated DCSync from the appliance

CVE-2026-15409 is an unauthenticated SSRF in the SMA1000 WorkPlace interface. The chain is the interesting part. The /wsproxy WebSocket endpoint is used to reach a locally bound Erlang distribution node (couchdb@127.0.0.1 on port 1050), the Erlang handshake is completed with a hardcoded cookie, and os:cmd() gives command execution as the couchdb user. From there the operator read policy_file.xml, decrypted the stored LDAP bind passwords (static 32-byte AES key lifted from ASAPPasswordUtil.class bytecode), and dropped a standalone Linux build of Impacket secretsdump to /tmp on the appliance. secretsdump then ran from the SonicWall itself against internal DCs, with DCSync automated using recovered LDAP creds and, more effectively, domain-controller machine-account hashes for pass-the-hash. The exploit is a direct refactor of Rapid7’s public PoC, reworked for unattended bulk use. Full chain, scripts and IOCs in the writeup. https://hunt.io/blog/sonicwall-sma1000-uk-council-attack submitted by /u/Straight-Practice-99 [link] [comments]Technical Information Security Content & DiscussionRead More