Severity: : Critical
  CVE Kennungen: : CVE-2015-1793
  Advisory Date: 09 de lipca de 2015

  DESCRIPTION

A certificate forgery security bypass has been reported in OpenSSL. This is due to incorrectly implemented certificate verification in OpenSSL. An attacker could use a crafted certificate to bypass certain checks. Successful exploitation could allow a remote attacker to bypass intended access restrictions.

  INFORMATION EXPOSURE

Vulnerability Protection in Trend Micro Deep Security protects user systems from threats that may leverage this vulnerability with the following DPI rules:

  • 1006855 – OpenSSL Alternative Chains Certificate Forgery Security Bypass Vulnerability (CVE-2015-1793)
  • 1006856 – OpenSSL Client Alternative Chains Certificate Forgery Security Bypass Vulnerability (CVE-2015-1793)

  SOLUTION

  AFFECTED SOFTWARE AND VERSION:

  • OpenSSL 1.0.2c
  • OpenSSL 1.0.2b
  • OpenSSL 1.0.1n
  • OpenSSL 1.0.1o