#VU27903 Session Fixation in Palo Alto PAN-OS - CVE-2020-1993

Vulnerability identifier: #VU27903

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1993

CWE-ID: CWE-384

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Palo Alto PAN-OS
Operating systems & Components / Operating system

Vendor: Palo Alto Networks, Inc.

Description

The vulnerability allows a remote attacker to gain unauthorized access to the system.

The vulnerability exists due to insecure session management mechanism within the GlobalProtect Portal feature in PAN-OS. A remote non-authenticated attacker can with ability to control victim's session identifier can hijack victim's session.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Palo Alto PAN-OS: 7.1.0 - 7.1.26, 8.0.0 - 8.0.21, 8.1.0 - 8.1.13, 9.0.0 - 9.0.7

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External links
https://security.paloaltonetworks.com/CVE-2020-1993

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.