Once an attacker has control over the firewall, they will have visibility into the internal network and can proceed to move laterally.” Randori said.īelow is the timeline for this vulnerability: “Our team was able to gain a shell on the affected target, access sensitive configuration data, extract credentials, and more. When ASLR is enabled the exploitation is more difficult, while on virtualized devices (VM-series firewalls) the attack is much easier due to lack of ASLR. Experts pointed out that this port is often accessible over the Internet. “The smuggling capability was not designated a CVE identifier as it is not considered a security boundary by the affected vendor.”Īccording to Randori Attack Team, an attacker must have network access to the device on the GlobalProtect service port (default port 443).
#PALO ALTO GLOBALPROTECT VPN CODE#
Exploitation of these together yields remote code execution under the privileges of the affected component on the firewall device.” reads the advisory published by Randori. The problematic code is not reachable externally without utilizing an HTTP smuggling technique. “CVE-2021-3064 is a buffer overflow that occurs while parsing user-supplied input into a fixed-length location on the stack. Palo Alto Networks is not aware of any attack in the wild exploiting this vulnerability. The vulnerability was discovered by researchers from Randori. The vulnerability affects PAN-OS 8.1 versions earlier than PAN-OS 8.1.17, it received a CVSS v3.1 base score of 9.8. The attacker must have network access to the GlobalProtect interface to exploit this issue.” reads the advisory published by Palo Alto Networks.
“A memory corruption vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to disrupt system processes and potentially execute arbitrary code with root privileges.
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