title: Junos OS: SRX Series: Credentials exposed when using HTTP and HTTPS Firewall Pass-through User Authentication
description: When an SRX Series device is configured to use HTTP/HTTPS pass-through authentication services, a client sending authentication credentials in the initial HTTP/HTTPS session is at risk that these credentials may be captured during follow-on HTTP/HTTPS requests by a malicious actor through a man-in-the-middle attack or by authentic servers subverted by malicious actors. FTP, and Telnet pass-through authentication services are not affected. Affected releases are Juniper Networks SRX Series: 12.1X46 versions prior to 12.1X46-D67 on SRX Series; 12.3X48 versions prior to 12.3X48-D25 on SRX Series; 15.1X49 versions prior to 15.1X49-D35 on SRX Series.
problem types: CWE-319: Cleartext Transmission of Sensitive Information.
affected:
{
platforms: SRX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 12.1X46-D67, status: affected, version: 12.1X46, versionType: custom
lessThan: 12.3X48-D25, status: affected, version: 12.3X48, versionType: custom
lessThan: 15.1X49-D35, status: affected, version: 15.1X49, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.1
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
version: 3.0
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: The following software releases have been updated to resolve this specific issue: Junos OS:12.1X46-D67, 12.3X48-D25, 15.1X49-D35, 17.3R1 all subsequent releases.
workarounds: 1. Discontinue use of HTTP/HTTPS Pass-through Firewall User Authentication
2. Use web-redirect when using Pass-through Firewall User Authentication
Example:
set security policies from-zone * to-zone * policy * then permit firewall-authentication pass-through web-redirect
For additional configuration guidance, customers should contact JTAC Support.