SB2017121301 - TLS Padding Oracle Vulnerability in Citrix NetScaler ADC and NetScaler Gateway
Published: December 13, 2017
Security Bulletin ID
SB2017121301
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) TLS Padding Oracle (CVE-ID: CVE-2017-17382)
The vulnerability allows a remote attacker to decrypt TLS traffic. A TLS padding Oracle issue has been detected in Citrix NetScaler Application Delivery Controller (ADC) and NetScaler Gateway. A remote attacker with ability to establish a large number of TLS connections with the target server can conduct a modified version of the Bleichenbacher chosen-ciphertext attack against RSA PKCS#1 v1.5 encryption block formatting and decrypt the data. The attack is known as "ROBOT" (Return Of Bleichenbacher's Oracle Threat).Remediation
Install update from vendor's website.