CVE-2017-17549 Information disclosure in n/a

Medium 5.9 Published Updated

Remote attackers can obtain sensitive information from backend TLS handshakes in Citrix NetScaler ADC and Gateway when using Client Certificates with DHE key exchange.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-17549?

CVE-2017-17549 is a medium-severity vulnerability in n/a, published on 13 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway 10.5 before build 67.13, 11.0 before build 71.22, 11.1 before build 56.19, and 12.0 before build 53.22 allow remote attackers to obtain sensitive information from the backend client TLS handshake by leveraging use of TLS with Client Certificates and a Diffie-Hellman Ephemeral (DHE) key exchange.

Weakness: CWE-200

Which versions are affected by CVE-2017-17549?

It affects 2 products.

Products include Citrix Application Delivery Controller Firmware, Citrix Netscaler Gateway Firmware.

How do I fix CVE-2017-17549?

No fix has been published for CVE-2017-17549 yet. Limit exposure of the affected software until one is available.

Is CVE-2017-17549 being exploited?

There is no known exploitation of CVE-2017-17549 in the wild and no public exploit code.

Sources

Also known as GHSA-8gj6-9x8x-c99v.

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