Description
In WordPress before 4.7.3, there is cross-site request forgery (CSRF) in Press This (wp-admin/includes/class-wp-press-this.php), leading to excessive use of server resources. The CSRF can trigger an outbound HTTP request for a large file that is then parsed by Press This.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wordpress | 4.7.3+dfsg-1 | — |
| Debian 13 | wordpress | 4.7.3+dfsg-1 | — |
| Debian 12 | wordpress | 4.7.3+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress | No fix yet | — |
References
- 96602 vdb-entry
- 1037959 vdb-entry
- https://wpvulndb.com/vulnerabilities/8770
- http://openwall.com/lists/oss-security/2017/03/06/7
- https://wordpress.org/news/2017/03/wordpress-4-7-3-security-and-maintenance-release/
- https://codex.wordpress.org/Version_4.7.3
- https://github.com/WordPress/WordPress/commit/263831a72d08556bc2f3a328673d95301a152829
- https://sumofpwn.nl/advisory/2016/cross_site_request_forgery_in_wordpress_press_this_function_allows_dos.html