CVE Vulnerability

CVE-2018-1000520

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..

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/ARMmbed/mbedtls/issues/1561 Issue Tracking Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*
Information

Published : 2018-06-26 04:29

Updated : 2020-11-05 03:42

NVD link : CVE-2018-1000520

Mitre link : CVE-2018-1000520

Products Affected
No products.
CWE
CWE-295

Improper Certificate Validation