High severity7.5OSV Advisory· Published Jun 26, 2018· Updated Jun 17, 2026
CVE-2018-1000520
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..
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Affected products
2Patches
Vulnerability mechanics
References
1- github.com/ARMmbed/mbedtls/issues/1561nvdIssue TrackingThird Party Advisory
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