5.8
CVSSv2

CVE-2013-1740

Published: 18/01/2014 Updated: 09/10/2018
CVSS v2 Base Score: 5.8 | Impact Score: 4.9 | Exploitability Score: 8.6
VMScore: 516
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N

Vulnerability Summary

The ssl_Do1stHandshake function in sslsecur.c in libssl in Mozilla Network Security Services (NSS) prior to 3.15.4, when the TLS False Start feature is enabled, allows man-in-the-middle malicious users to spoof SSL servers by using an arbitrary X.509 certificate during certain handshake traffic.

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Vendor Advisories

NSS could be made to expose sensitive information over the network ...
A flaw was found in the way TLS False Start was implemented in NSS An attacker could use this flaw to potentially return unencrypted information from the server ...