Description
Grav 1.7.53 before 1.7.53.5 and 2.0.0-rc.8 before 2.2.2 contains a resource exhaustion vulnerability that allows anonymous visitors to bypass the system.images.max_pixels limit when system.images.url_actions is enabled. Attackers can send single-dimension or percentage forceResize, zoomCrop, or chained image actions to make GD allocate multi-gigabyte canvases, exhausting server memory and taking the site down.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| getgrav | grav | 2.0.0-rc.8 – < 2.2.2, 1.7.53 – < 1.7.53.5 | 2.2.2 |
References
- GitHub Security Advisory (GHSA-8gr9-59p6-r488) vendor-advisory
- VulnCheck Advisory: Grav before 1.7.53.5 and 2.2.2 Image Pixel Limit Bypass Denial of Service third-party-advisory