Palo Alto Networks Product Security Incident Response TeamPAN-SA-2017-0021Vulnerability in the PAN-OS DNS Proxy
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.067 Low
EPSS
Percentile
93.9%
A Remote Code Execution vulnerability exists in the PAN-OS DNS Proxy. This issue affects customers who have DNS Proxy enabled in PAN-OS. This issue affects both the Data and Management planes of the firewall. When DNS Proxy processes a specially crafted fully qualified domain names (FQDN), it is possible to execute code on the firewall. (ref # PAN-77516 / CVE-2017-8390).
Successful exploitation of this issue could allow an attacker to execute code on the firewall.
This issue affects PAN-OS 6.1.17 and earlier, PAN-OS 7.0.15 and earlier, PAN-OS 7.1.9 and earlier, PAN-OS 8.0.2 and earlier
Work around:
Palo Alto Networks recommends disabling DNS Proxy for those customers who are affected and are unable to apply the update.
Related
10 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.067 Low
EPSS
Percentile
93.9%