QID 730531

Date Published: 2023-02-20

QID 730531: Palo Alto Networks (PAN-OS)ROBOT attack against PAN-OS Vulnerability (PAN-89936)

PAN OS is the software that runs all Palo Alto Networks next-generation firewalls.

ROBOT is an attack that affects the TLS RSA key exchange and could lead to decryption of captured sessions if the TLS server originally serving said captured session is still alive, vulnerable and using the same private key. (PAN-89936 / CVE-2017-17841)

Affected Versions:
PAN-OS 8.0 versions earlier than PAN-OS 8.0.7
PAN-OS 7.1 versions earlier than PAN-OS 7.1.15
PAN-OS 6.1 versions earlier than PAN-OS 6.1.20

QID Detection Logic (Authenticated):

This QID looks for the vulnerable version of PAN-OS

CVSS V3 rated as Medium - 5.9 severity.

CVSS V2 rated as Medium - 4.3 severity.

Solution

Refer to PAN-89936 for more information about patching this vulnerability.

Workaround:
Customers running PAN-OS 7.1 or later can configure their SSL Decryption profiles to disable RSA. If the GlobalProtect server certificate is using RSA, customers running PAN-OS 7.1 or later can opt to replace this certificate with one implementing the Elliptic Curve DSA algorithm as a safer alternative. In addition, Palo Alto Networks has released content update 757 which includes a vulnerability signature ("TLS Network Security Protocol Information Disclosure Vulnerability - ROBOT", #38407) that can be used as an interim mitigation to protect PAN-OS devices until the software is upgraded. For complete protection, signature #38407 must be applied upstream from any interfaces implementing SSL Decryption, or hosting a GlobalProtect portal or a GlobalProtect gateway.

Vendor References

PAN-89936 - security.paloaltonetworks.com/CVE-2017-17841

CVEs related to QID 730531

CVE-2017-17841 |

Software Advisories

Advisory ID	Software	Component	Link
PAN-89936			security.paloaltonetworks.com/CVE-2017-17841

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].