High advisory for SPIP

Advisory overview

SPIP before 4.4.29 contains a SQL injection vulnerability that allows authenticated attackers with back-office access to inject arbitrary SQL by submitting a differing where parameter value in the POST body versus the GET query string on the /ecrire/?exec=articles endpoint, bypassing spip_sanitize_from_request() sanitization. Attackers can exploit this request parameter mismatch to extract database contents, including protected articles and bcrypt password hashes of users.

Related references

• https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-29.html
• https://www.spip.net/fr_article6500.html
• https://www.vulncheck.com/advisories/spip-before-authenticated-sql-injection-via-where-parameter