Vulnerability Name:

CVE-2021-3063 (CCN-213259)

Assigned:2021-11-10
Published:2021-11-10
Updated:2021-11-15
Summary:An improper handling of exceptional conditions vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to send specifically crafted traffic to a GlobalProtect interface that causes the service to stop responding. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.21; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h4; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8-h4; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers are not impacted by this issue.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-755
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-3063

Source: XF
Type: UNKNOWN
paloalto-cve20213063-dos(213259)

Source: CCN
Type: Palo Alto Networks Security Advisories
CVE-2021-3063 PAN-OS: Denial-of-Service (DoS) Vulnerability in GlobalProtect Portal and Gateway Interfaces

Source: CONFIRM
Type: Vendor Advisory
N/A

Vulnerable Configuration:Configuration 1:
  • cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 8.1.0 and < 8.1.21)
  • OR cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 9.0.0 and <= 9.0.14)
  • OR cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 9.1.0 and <= 9.1.11)
  • OR cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 10.0.0 and <= 10.0.8)
  • OR cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 10.1.0 and < 10.1.3)

    • Configuration CCN 1:
  • cpe:/o:paloaltonetworks:pan-os:9.0.0:*:*:*:*:*:*:*
  • OR cpe:/o:paloaltonetworks:pan-os:9.1.0:*:*:*:*:*:*:*
  • OR cpe:/o:paloaltonetworks:pan-os:10.1.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    paloaltonetworks pan-os *
    paloaltonetworks pan-os *
    paloaltonetworks pan-os *
    paloaltonetworks pan-os *
    paloaltonetworks pan-os *
    paloaltonetworks pan-os 9.0.0
    paloaltonetworks pan-os 9.1.0
    paloaltonetworks pan-os 10.1.0