CVE-2014-1771 Security feature bypass in n/a

Medium 6.8 Published Updated

Man-in-the-middle attackers can bypass TLS certificate validation during renegotiation to read or modify sensitive session data in Internet Explorer.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2014-1771?

CVE-2014-1771 is a medium-severity vulnerability in Microsoft Internet Explorer, published on 11 Jun 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

SChannel in Microsoft Internet Explorer 6 through 11 does not ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a "triple handshake attack," aka "TLS Server Certificate Renegotiation Vulnerability."

Weakness: CWE-310

Which versions are affected by CVE-2014-1771?

It affects 1 product.

Products include Microsoft Internet Explorer.

How do I fix CVE-2014-1771?

No fix has been published for CVE-2014-1771 yet. Limit exposure of the affected software until one is available.

Is CVE-2014-1771 being exploited?

There is no known exploitation of CVE-2014-1771 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

All Microsoft Internet Explorer vulnerabilities

Sources

Also known as GHSA-x384-p6fm-q24w.

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