PT-2017-14764 · Citrix · Citrix Netscaler Gateway+1

Published 2017-12-13 · Updated 2019-10-03 · CVE-2017-17382

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 decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, also known as a ROBOT attack. This type of attack exploits a vulnerability in the RSA encryption algorithm to decrypt encrypted data.

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

Exploit

Fix

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2017-17382

Affected Products

Citrix Netscaler Application Delivery Controller

Citrix Netscaler Gateway

References · 8

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ssl/bleichenbacher_oracle.py · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-17382 · Security Note
• https://osv.dev/vulnerability/CVE-2017-17382 · Vendor Advisory
• https://support.citrix.com/article/ctx230238 · Vendor Advisory
• https://robotattack.org · Note
• https://kb.cert.org/vuls/id/144389 · Note
• http://securitytracker.com/id/1039985 · Note
• http://securityfocus.com/bid/102173 · Note