title: Cookie Without Secure Flag
description: A vulnerability has been identified in PT-G503 Series firmware versions prior to v5.2, where the Secure attribute for sensitive cookies in HTTPS sessions is not set, which could cause the cookie to be transmitted in plaintext over an HTTP session. The vulnerability may lead to security risks, potentially exposing user session data to unauthorized access and manipulation.
problem types: CWE-614: Sensitive Cookie in HTTPS Session Without 'Secure' Attribute
affected:
{
defaultStatus: unaffected
product: PT-G503 Series
vendor: Moxa
versions:
lessThanOrEqual: 5.2, status: affected, version: 1.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 3.1
baseSeverity: LOW
confidentialityImpact: LOW
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
workarounds: Users should carefully use HTTP if necessary, and could try to replace HTTP by HTTPS when using the web service. Additionally, refer to the following mitigation measures to deploy the product in an appropriate product security context.
Moxa recommends users follow CISA recommendations.
*  Reduce network exposure by ensuring that all control system devices and systems are not accessible from the Internet.
*  Place control system networks and remote devices behind firewalls, isolating them from business networks.
*  When remote access is necessary, employ secure methods such as Virtual Private Networks (VPNs). It is important to note that VPNs may have vulnerabilities and should be kept up to date with the latest available version. Remember that the security of a VPN depends on the security of its connected devices.