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WordPress: Unauthenticated path traversal leading to conditional RCE

WordPress: Unauthenticated path traversal leading to conditional RCE

vntok

Comments (59)

  • beezle
    "WordPress 7.1.2 has been released containing a fix for the vulnerability, and as a courtesy to users on older branches the fix has been backported to all branches back to 4.7"As a courtesy, I try not to say more than one bad thing about WP every day. FWIW about 1/3 of installs are not on the recent 7 branch.
  • zelphirkalt
    These are the reason, why every easily reachable web server will be spammed with /something/something.php?somearg=someval. If I had to guess, which software on the web has been the most exploitable over all of the web's history, WP would surely be among the top candidates. Maybe right after MS Teams or Sharepoint or some stuff like that.
  • random_savv
    I am so happy that I asked Codex to rewrite our website as Hugo templates which allowed us to statically host it and get rid of Wordpress. So much stress gone!
  • chrismorgan
  • vntok
    Ironically, this 9 years old comment on the official documentation page of one of the affected functions perfectly describes both the nature and remediation of this major security flaw:> Paul Ryan 9 years ago> Note that locate_template() does not prevent directory traversal attacks, so if you’re passing a user-provided template name to the function, be sure to verify that it’s from one of the three appropriate locations (active theme directory, parent theme directory, or /wp-includes/theme-compat/ directory).https://developer.wordpress.org/reference/functions/locate_t...
  • iLoveOncall
    WordPress really is a piece of garbage software, and if you've ever developed plugins for it it is soooo apparent.The documentation is a perfect reflection of the absolute mess of spaghetti code that it is, half of the methods that you will use constantly when developing plugins are undocumented, even untyped. It's literally unusable.I know WordPress is good thanks to its ecosystem, but really, really, do NOT use it.
  • whycome
    hmm, this may be why i just saw an unexpected update to a very old theme.
  • system2
    pearcmd.php must exist, and register_argc_argv must be on, not common with hosting providers. But I am assuming the other themes and meeting conditions possibly affect a lot of WordPress sites.
  • tptacek
    [flagged]