i would agree that it’s completely benign, except one of my clients got one of these last night. they’re running 2.3.3. their blog is set to:
[ ] anyone can register
[X] users must be logged in to post a comment
therefore, whatever these people are doing, they are able to post a comment without even having a user account. sure it got caught in moderation, but they were still able to post.
if you look at the httpd logs, it was done via POST method to wp-trackback.php:
64.191.63.181 – – [09/Mar/2008:01:22:17 -0800] “POST /wp-trackback.php?p=4 HTTP/1.1” 200 922 “-” “Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)”
that was the exact entry that created the comment.
i’ll paste every access from this script to the site in order, it enters at an arbitrary posting URL, tries to find wp-trackback wherever it exists (starts recursively crawling up the directory tree) when it finds it, it then tries to GET wp-trackback with incrementing post numbers until it finds the first published post, then it GETs wp-login.php?action=logout, then it POSTs to wp-trackback 4 times.
the comment was created on the 2nd POST (that’s the timestamp that matches the time in mysql).
64.191.63.181 - - [09/Mar/2008:01:22:06 -0800] "POST /2007/04/09/post-name-here/wp-trackback.php HTTP/1.1" 200 2361 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:09 -0800] "POST /2007/04/09/wp-trackback.php HTTP/1.1" 200 2349 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:10 -0800] "POST /2007/04/wp-trackback.php HTTP/1.1" 200 7944 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:11 -0800] "POST /2007/wp-trackback.php HTTP/1.1" 200 7942 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:12 -0800] "POST /wp-trackback.php HTTP/1.1" 200 523 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:13 -0800] "GET /wp-trackback.php?p=1 HTTP/1.1" 200 522 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:13 -0800] "GET /wp-trackback.php?p=2 HTTP/1.1" 200 522 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:14 -0800] "GET /wp-trackback.php?p=3 HTTP/1.1" 200 522 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:15 -0800] "GET /wp-trackback.php?p=4 HTTP/1.1" 200 468 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:15 -0800] "GET /wp-login.php?action=logout HTTP/1.1" 200 1061 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:16 -0800] "POST /wp-trackback.php?p=4 HTTP/1.1" 200 476 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:17 -0800] "POST /wp-trackback.php?p=4 HTTP/1.1" 200 922 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:18 -0800] "POST /wp-trackback.php?p=4 HTTP/1.1" 200 922 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"
64.191.63.181 - - [09/Mar/2008:01:22:19 -0800] "POST /wp-trackback.php?p=4 HTTP/1.1" 200 922 "-" "Mozilla/4.0 (compatible; MSIE 5.00; Windows XP Service Pack 2)"