WordPress vulnerabilities

Cross-site scripting (XSS) vulnerability in wp-admin/vars.php in WordPress before 2.0.10 RC2, and before 2.1.3 RC2 in the 2.1 series, allows remote authenticated users with theme privileges to inject arbitrary web script or HTML via the PATH_INFO in the administration interface, related to loose regular expression processing of PHP_SELF.

wp-login.php in WordPress allows remote attackers to redirect authenticated users to other websites and potentially obtain sensitive information via the redirect_to parameter.

WordPress allows remote attackers to obtain sensitive information via a direct request for wp-admin/admin-functions.php, which reveals the path in an error message.

WordPress 2.1.1, as downloaded from some official distribution sites during February and March 2007, contains an externally introduced backdoor that allows remote attackers to execute arbitrary commands via (1) an eval injection vulnerability in the ix parameter to wp-includes/feed.php, and (2) an untrusted passthru call in the iz parameter to wp-includes/theme.php.

Cross-site request forgery (CSRF) vulnerability in the AdminPanel in WordPress 2.1.1 and earlier allows remote attackers to perform privileged actions as administrators, as demonstrated using the delete action in wp-admin/post.php. NOTE: this issue can be leveraged to perform cross-site scripting (XSS) attacks and steal cookies via the post parameter.

Multiple cross-site scripting (XSS) vulnerabilities in wp-includes/functions.php in WordPress before 2.1.2-alpha allow remote attackers to inject arbitrary web script or HTML via (1) the Referer HTTP header or (2) the URI, a different vulnerability than CVE-2007-1049.

Cross-site scripting (XSS) vulnerability in the wp_explain_nonce function in the nonce AYS functionality (wp-includes/functions.php) for WordPress 2.0 before 2.0.9 and 2.1 before 2.1.1 allows remote attackers to inject arbitrary web script or HTML via the file parameter to wp-admin/templates.php, and possibly other vectors involving the action variable.

WordPress allows remote attackers to determine the existence of arbitrary files, and possibly read portions of certain files, via pingback service calls with a source URI that corresponds to a local pathname, which triggers different fault codes for existing and non-existing files, and in certain configurations causes a brief file excerpt to be published as a blog comment.

WordPress allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a file with a binary content type, which is downloaded even though it cannot contain usable pingback data.

The wp_remote_fopen function in WordPress before 2.1 allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a large file, which triggers a long download session without a timeout constraint.

WordPress 2.0.6, and 2.1Alpha 3 (SVN:4662), does not properly verify that the m parameter value has the string data type, which allows remote attackers to obtain sensitive information via an invalid m[] parameter, as demonstrated by obtaining the path, and obtaining certain SQL information such as the table prefix.

wp-trackback.php in WordPress 2.0.6 and earlier does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to execute arbitrary SQL commands via the tb_id parameter. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in WordPress.

wp-login.php in WordPress 2.0.5 and earlier displays different error messages if a user exists or not, which allows remote attackers to obtain sensitive information and facilitates brute force attacks.

WordPress before 2.0.6, when mbstring is enabled for PHP, decodes alternate character sets after escaping the SQL query, which allows remote attackers to bypass SQL injection protection schemes and execute arbitrary SQL commands via multibyte charsets, as demonstrated using UTF-7.

Cross-site scripting (XSS) vulnerability in the CSRF protection scheme in WordPress before 2.0.6 allows remote attackers to inject arbitrary web script or HTML via a CSRF attack with an invalid token and quote characters or HTML tags in URL variable names, which are not properly handled when WordPress generates a new link to verify the request.

Cross-site scripting (XSS) vulnerability in wp-admin/templates.php in WordPress 2.0.5 allows remote attackers to inject arbitrary web script or HTML via the file parameter. NOTE: some sources have reported this as a vulnerability in the get_file_description function in wp-admin/admin-functions.php.

WordPress before 2.0.5 does not properly store a profile containing a string representation of a serialized object, which allows remote authenticated users to cause a denial of service (application crash) via a string that represents a (1) malformed or (2) large serialized object, because the object triggers automatic unserialization for display.

wp-admin/user-edit.php in WordPress before 2.0.5 allows remote authenticated users to read the metadata of an arbitrary user via a modified user_id parameter.

Multiple directory traversal vulnerabilities in plugins/wp-db-backup.php in WordPress before 2.0.5 allow remote authenticated users to read or overwrite arbitrary files via directory traversal sequences in the (1) backup and (2) fragment parameters in a GET request.

WordPress 2.0.2 through 2.0.5 allows remote attackers to obtain sensitive information via a direct request for (1) 404.php, (2) akismet.php, (3) archive.php, (4) archives.php, (5) attachment.php, (6) blogger.php, (7) comments.php, (8) comments-popup.php, (9) dotclear.php, (10) footer.php, (11) functions.php, (12) header.php, (13) hello.php, (14) wp-content/themes/default/index.php, (15) links.php, (16) livejournal.php, (17) mt.php, (18) page.php, (19) rss.php, (20) searchform.php, (21) search.php, (22) sidebar.php, (23) single.php, (24) textpattern.php, (25) upgrade-functions.php, (26) upgrade-schema.php, or (27) wp-db-backup.php, which reveal the path in various error messages. NOTE: another researcher has disputed the details of this report, stating that version 2.0.5 does not exist. NOTE: the admin-footer.php, admin-functions.php, default-filters.php, edit-form-advanced.php, edit-link-form.php, edit-page-form.php, kses.php, locale.php, rss-functions.php, template-loader.php, and wp-db.php vectors are already covered by CVE-2006-0986. The edit-form-comment.php, vars.php, and wp-settings.php vectors are already covered by CVE-2005-4463. The menu-header.php vector is already covered by CVE-2005-2110.

Multiple unspecified vulnerabilities in WordPress before 2.0.4 have unknown impact and remote attack vectors. NOTE: due to lack of details, it is not clear how these issues are different from CVE-2006-3389 and CVE-2006-3390, although it is likely that 2.0.4 addresses an unspecified issue related to "Anyone can register" functionality (user registration for guests).

WordPress 2.0.3 allows remote attackers to obtain the installation path via a direct request to various files, such as those in the (1) wp-admin, (2) wp-content, and (3) wp-includes directories, possibly due to uninitialized variables.

index.php in WordPress 2.0.3 allows remote attackers to obtain sensitive information, such as SQL table prefixes, via an invalid paged parameter, which displays the information in an SQL error message. NOTE: this issue has been disputed by a third party who states that the issue does not leak any target-specific information.

vars.php in WordPress 2.0.2, possibly when running on Mac OS X, allows remote attackers to spoof their IP address via a PC_REMOTE_ADDR HTTP header, which vars.php uses to redefine $_SERVER['REMOTE_ADDR'].

Direct static code injection vulnerability in WordPress 2.0.2 and earlier allows remote attackers to execute arbitrary commands by inserting a carriage return and PHP code when updating a profile, which is appended after a special comment sequence into files in (1) wp-content/cache/userlogins/ (2) wp-content/cache/users/ which are later included by cache.php, as demonstrated using the displayname argument.

Cross-site scripting (XSS) vulnerability in the paging links functionality in template-functions-links.php in Wordpress 1.5.2, and possibly other versions before 2.0.1, allows remote attackers to inject arbitrary web script or HTML to Internet Explorer users via the request URI ($_SERVER['REQUEST_URI']).

Multiple "unannounced" cross-site scripting (XSS) vulnerabilities in WordPress before 2.0.2 allow remote attackers to inject arbitrary web script or HTML via unknown attack vectors.

SQL injection vulnerability in WordPress 1.5.2, and possibly other versions before 2.0, allows remote attackers to execute arbitrary SQL commands via the User-Agent field in an HTTP header for a comment.

WordPress 2.0.1 and earlier allows remote attackers to obtain sensitive information via a direct request to (1) default-filters.php, (2) template-loader.php, (3) rss-functions.php, (4) locale.php, (5) wp-db.php, and (6) kses.php in the wp-includes/ directory; and (7) edit-form-advanced.php, (8) admin-functions.php, (9) edit-link-form.php, (10) edit-page-form.php, (11) admin-footer.php, and (12) menu.php in the wp-admin directory; and possibly (13) list directory contents of the wp-includes directory. NOTE: the vars.php, edit-form.php, wp-settings.php, and edit-form-comment.php vectors are already covered by CVE-2005-4463. The menu-header.php vector is already covered by CVE-2005-2110. Other vectors might be covered by CVE-2005-1688. NOTE: if the typical installation of WordPress does not list any site-specific files to wp-includes, then vector [13] is not an exposure.

Multiple cross-site scripting (XSS) vulnerabilities in the "post comment" functionality of WordPress 2.0.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) name, (2) website, and (3) comment parameters.

Cross-site scripting (XSS) vulnerability in WordPress 2.0.0 allows remote attackers to inject arbitrary web script or HTML via scriptable attributes such as (1) onfocus and (2) onblur in the "author's website" field. NOTE: followup comments to the researcher's web log suggest that this issue is only exploitable by the same user who injects the XSS, so this might not be a vulnerability

WordPress before 1.5.2 allows remote attackers to obtain sensitive information via a direct request to (1) wp-includes/vars.php, (2) wp-content/plugins/hello.php, (3) wp-admin/upgrade-functions.php, (4) wp-admin/edit-form.php, (5) wp-settings.php, and (6) wp-admin/edit-form-comment.php, which leaks the path in an error message related to undefined functions or failed includes. NOTE: the wp-admin/menu-header.php vector is already covered by CVE-2005-2110. NOTE: the vars.php, edit-form.php, wp-settings.php, and edit-form-comment.php vectors were also reported to affect WordPress 2.0.1.

Direct code injection vulnerability in WordPress 1.5.1.3 and earlier allows remote attackers to execute arbitrary PHP code via the cache_lastpostdate[server] cookie.

WordPress 1.5.1.2 and earlier allows remote attackers to obtain sensitive information via (1) a direct request to menu-header.php or a "1" value in the feed parameter to (2) wp-atom.php, (3) wp-rss.php, or (4) wp-rss2.php, which reveal the path in an error message. NOTE: vector [1] was later reported to also affect WordPress 2.0.1.

wp-login.php in WordPress 1.5.1.2 and earlier allows remote attackers to change the content of the forgotten password e-mail message via the message variable, which is not initialized before use.

SQL injection vulnerability in XMLRPC server in WordPress 1.5.1.2 and earlier allows remote attackers to execute arbitrary SQL commands via input that is not filtered in the HTTP_RAW_POST_DATA variable, which stores the data in an XML file.

Multiple cross-site scripting (XSS) vulnerabilities in post.php in WordPress 1.5.1.2 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) p or (2) comment parameter.

SQL injection vulnerability in template-functions-category.php in WordPress 1.5.1 allows remote attackers to execute arbitrary SQL commands via the $cat_ID variable, as demonstrated using the cat parameter to index.php.

Wordpress 1.5 and earlier allows remote attackers to obtain sensitive information via a direct request to files in (1) wp-content/themes/, (2) wp-includes/, or (3) wp-admin/, which reveal the path in an error message.

SQL injection vulnerability in wp-trackback.php in Wordpress 1.5 and earlier allows remote attackers to execute arbitrary SQL commands via the tb_id parameter.

Multiple cross-site scripting (XSS) vulnerabilities in template-functions-post.php in WordPress 1.5 and earlier allow remote attackers to execute arbitrary commands via the (1) content or (2) title of the post.

CRLF injection vulnerability in wp-login.php in WordPress 1.2 allows remote attackers to perform HTTP Response Splitting attacks to modify expected HTML content from the server via the text parameter.

Multiple cross-site scripting (XSS) vulnerabilities in Wordpress 1.2 allow remote attackers to inject arbitrary web script or HTML via the (1) redirect_to, text, popupurl, or popuptitle parameters to wp-login.php, (2) redirect_url parameter to admin-header.php, (3) popuptitle, popupurl, content, or post_title parameters to bookmarklet.php, (4) cat_ID parameter to categories.php, (5) s parameter to edit.php, or (6) s or mode parameter to edit-comments.php.