SB2024082298 - Input validation error in hono

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2024-43787)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to bypass csrf protection.

The vulnerability exists due to improper input validation in the csrf middleware when handling requests with crafted Content-Type headers. A remote attacker can send a specially crafted request with an upper-case form-like MIME type to bypass csrf protection.

User interaction is required to trigger the crafted request.

Remediation

Install update from vendor's website.

References

• https://github.com/honojs/hono/security/advisories/GHSA-rpfr-3m35-5vx5
• https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17