CVE-2024-21510
MediumCVSS 5.4Summary
Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.
Risk Assessment
An attacker can redirect users to malicious sites or poison caches, potentially leading to phishing or further attacks. It may also enable SSRF in proxy configurations.
Recommendation
Update the sinatra package to a version containing the fix. Configure proxy and caching servers to properly handle the X-Forwarded-Host header.
Other vulnerabilities in Sinatra
Original NVD description (English source)
Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS