CVE-2024-8534: netscaler gateway Buffer Overflow — Fix

Description

Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR the appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) OR the appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled

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CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-119 Buffer Overflow

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.321
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.321
citrix	netscaler_application_delivery_controller	12.1 — 13.1-55.34
citrix	netscaler_application_delivery_controller	13.1 — 13.1-37.207
citrix	netscaler_application_delivery_controller	14.1 — 14.1-29.72
citrix	netscaler_gateway	12.1 — 13.1-55.34
citrix	netscaler_gateway	14.1 — 14.1-29.72

References

Advisories & Patches

https://support.citrix.com/s/article/CTX691608-netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20248534-and-cve20248535?language=en_US

Frequently Asked Questions

What is CVE-2024-8534? +

Memory safety vulnerability leading to memory corruption and Denial of Service in NetScaler ADC and Gateway if the appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled OR the appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) OR the appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-8534? +

CVE-2024-8534 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-8534? +

CVE-2024-8534 affects products from citrix, specifically: netscaler_application_delivery_controller, netscaler_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8534? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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