An exploitable free of a stack pointer vulnerability exists in the x509 certificate parsing code of ARM mbed TLS before 1.3.19, 2.x before 2.1.7, and 2.4.x before 2.4.2. A specially crafted x509 certificate, when parsed by mbed TLS library, can cause an invalid free of a stack pointer leading to a potential remote code execution. In order to exploit this vulnerability, an attacker can act as either a client or a server on a network to deliver malicious x509 certificates to vulnerable applications.
The product does not validate, or incorrectly validates, a certificate.
| Link | Tags |
|---|---|
| https://security.gentoo.org/glsa/201706-18 | vendor advisory |
| http://www.talosintelligence.com/reports/TALOS-2017-0274/ | vdb entry exploit third party advisory technical description |
| https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2017-01 | mitigation vendor advisory |