Description (CNA)
Ech0 through 4.5.6 registers the PUT /api/echo/like/:id endpoint on the public router group without authentication or rate limiting. Unauthenticated attackers can increment the fav_count counter of any echo (including private echoes) by supplying its UUID, which can be harvested from the public GET /api/echo/page feed. Repeated requests are accepted without deduplication, each triggering a database write and a four-key cache invalidation, allowing attackers to inflate popularity metrics and amplify load on the database and cache. Fixed in 4.7.3.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| lin-snow / Ech0 | affected 0 before 4.7.3; unaffected 4.7.3 |
CWE
CWE-770
References
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-pj6q-4vq4-r8cg
- https://www.vulncheck.com/advisories/ech0-before-unauthenticated-fav-count-modification
ADP enrichment
No English description supplied.