CVE-2018-1000520
Last modified
CVE-2018-1000520 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
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..
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | <= 2.7.0 |
References
- https://github.com/ARMmbed/mbedtls/issues/1561Issue Tracking, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/issues/1561Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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