cve/2018/CVE-2018-1000520.md

CVE-2018-1000520

Description

ARM mbedTLS version 2.7.0 and earlier contains a Ciphersuite Allows Incorrectly Signed Certificates vulnerability in mbedtls_ssl_get_verify_result() that can result in ECDSA-signed certificates are accepted, when only RSA-signed ones should be.. This attack appear to be exploitable via Peers negotiate a TLS-ECDH-RSA-* ciphersuite. Any of the peers can then provide an ECDSA-signed certificate, when only an RSA-signed one should be accepted..

POC

Reference

• https://github.com/ARMmbed/mbedtls/issues/1561
• https://github.com/ARMmbed/mbedtls/issues/1561

Github

No PoCs found on GitHub currently.