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Clean up the logic for ssh_auth_failed. Addresses BIT-1641

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This commit is contained in:
Vlad Grigorescu 2016-10-13 15:24:38 -05:00
parent 3e7d143e31
commit 7caf2d0356
1 changed files with 13 additions and 10 deletions
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13
scripts/base/protocols/ssh/main.bro
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@ -186,8 +186,6 @@ event ssh_auth_attempted(c: connection, authenticated: bool) &priority=5
else
{
c$ssh$auth_attempts = 1;
if ( !authenticated )
event ssh_auth_failed(c);
}
if ( authenticated && disable_analyzer_after_detection )
@ -252,10 +250,15 @@ event ssh_capabilities(c: connection, cookie: string, capabilities: Capabilities
event connection_state_remove(c: connection) &priority=-5
{
if ( c?$ssh && !c$ssh$logged && c$ssh?$client && c$ssh?$server )
if ( c?$ssh && !c$ssh$logged && c$ssh?$client && c$ssh?$server && c$ssh?$auth_success )
{
if ( c$ssh?$auth_success )
event ssh_auth_result(c, c$ssh$auth_success, c$ssh$auth_attempts);
# Success get logged immediately. To protect against a race condition, we'll double check:
if ( c$ssh$auth_success )
return;
# Now that we know it's a failure, we'll set the field, raise the event, and log it.
c$ssh$auth_success = F;
event SSH::ssh_auth_failed(c);
c$ssh$logged = T;
Log::write(SSH::LOG, c$ssh);