Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability in vCluster Platform could allow an attacker with namespace creation privileges to inject malicious scripts. If exploited, this could lead to the creation of a new Global-Admin user, potentially bypassing security controls.
- Attacker can create new admin accounts.
- Impacts users within the platform's browser.
Attack Path
How an attacker could exploit the issue
An attacker with namespace creation privileges can exploit this vulnerability to inject malicious scripts into the platform's browser. This could allow them to impersonate users, steal sensitive information, or even create new administrative accounts, potentially gaining full control over the vCluster environment.
- Needs namespace creation permission.
- Exploits template name field.
- Stored XSS leads to admin takeover.
Live Threat
Current exploitation, exposure, and threat context
Attackers may find this Stored XSS vulnerability in vCluster Platform appealing due to the potential for creating a Global-Admin user, which would grant significant control. The requirement for an attacker to create namespaces is a limiting factor, but once met, the ability to execute arbitrary scripts within the platform's browser context is a powerful outcome.
- No observed public exploit.
- Not listed on KEV.
- Vulnerability fixed recently.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Prioritize patching services vulnerable to Stored XSS, as exploitation could lead to new Global-Admin user creation and bypass security controls. Teams should focus on identifying and isolating affected instances immediately if patching is not feasible.
- Apply patches: v4.4.3, v4.5.5, v4.6.2, v4.7.1, or v4.8.0.
- Contain vulnerable services offline.
- Monitor for suspicious user creation activity.
