Fix buffer overrun in spam= acl condition. Bug 1552

diff --git a/src/src/spam.c b/src/src/spam.c
index 3a5349fc37398ff5c4caa151a8f63057d0d8ec26..dab57ff129fe9d821516f4c1f627008b831610a5 100644 (file)
--- a/src/src/spam.c
+++ b/src/src/spam.c
@@ -136,7 +136,7 @@ spam(uschar **listptr)
         (spamd_address_container *)store_get(sizeof(spamd_address_container));
 
       /* grok spamd address and port */
-      if (sscanf(CS address, "%s %u", this_spamd->tcp_addr, &(this_spamd->tcp_port)) != 2)
+      if (sscanf(CS address, "%23s %u", this_spamd->tcp_addr, &this_spamd->tcp_port) != 2)
         {
         log_write(0, LOG_MAIN,
           "%s warning - invalid spamd address: '%s'", loglabel, address);