PT-2017-14849 · Citrix · Citrix Netscaler Application Delivery Controller+1

Published 2017-12-13 · Updated 2018-01-05 · CVE-2017-17549

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway versions 10.5 before build 67.13 Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway versions 11.0 before build 71.22 Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway versions 11.1 before build 56.19 Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway versions 12.0 before build 53.22

Description The issue allows remote attackers to obtain sensitive information from the backend client TLS handshake by leveraging the use of TLS with Client Certificates and a Diffie-Hellman Ephemeral (DHE) key exchange.

Recommendations For versions 10.5 before build 67.13, update to build 67.13 or later to resolve the issue. For versions 11.0 before build 71.22, update to build 71.22 or later to resolve the issue. For versions 11.1 before build 56.19, update to build 56.19 or later to resolve the issue. For versions 12.0 before build 53.22, update to build 53.22 or later to resolve the issue.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2017-17549

Affected Products

Citrix Netscaler Application Delivery Controller

Netscaler Gateway

References · 5

• https://support.citrix.com/article/ctx230612 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-17549 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17549 · Security Note
• http://securitytracker.com/id/1040011 · Note
• http://securityfocus.com/bid/102177 · Note