VULNERABILITY INTELLIGENCE
CVE-2013-4623
CVSS score4.3 MEDIUM
EPSS probability1.89%
CISA KEVNot currently listed
Published2013-09-30
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:P
Description
The x509parse_crt function in x509.h in PolarSSL 1.1.x before 1.1.7 and 1.2.x before 1.2.8 does not properly parse certificate messages during the SSL/TLS handshake, which allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a certificate message that contains a PEM encoded certificate.
Weakness classification
- CWE-20: Improper Input Validation