News
Vigil@nce - curl: Man-in-the-Middle with SSL_VERIFYSTATUS
April 2017 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can act as a Man-in-the-Middle on curl with
CURLOPT_SSL_VERIFYSTATUS, in order to read or write data in the
session.
Impacted products: curl, pfSense.
Severity: 2/4.
Creation date: 22/02/2017.
DESCRIPTION OF THE VULNERABILITY
The curl product uses the TLS protocol, in order to create secure
sessions.
However, the X.509 certificate and the service identity are not
correctly checked during the usage of CURLOPT_SSL_VERIFYSTATUS
(OCSP Stapling, TLS Certificate Status Request).
An attacker can therefore act as a Man-in-the-Middle on curl with
CURLOPT_SSL_VERIFYSTATUS, in order to read or write data in the
session.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/curl-Man-in-the-Middle-with-SSL-VERIFYSTATUS-21925
