Vulnerability CVE-2021-3047 - CERT Civis.Net

Vulnerability Name:

CVE-2021-3047 (CCN-207315)

Assigned:

2021-08-11

Published:

2021-08-11

Updated:

2021-08-19

Summary:

A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.19; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.4. PAN-OS 10.1 versions are not impacted.

CVSS v3 Severity:

3.1 Low (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N)
2.7 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

4.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N)
3.7 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

3.6 Low (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

Vulnerability Type:

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-3047

Source: XF
Type: UNKNOWN
paloalto-cve20213047-weak-security(207315)

Source: CCN
Type: Palo Alto Networks Security Advisories
CVE-2021-3047 PAN-OS: Weak Cryptography Used in Web Interface Authentication

Source: CONFIRM
Type: Vendor Advisory
N/A

Vulnerable Configuration:

Configuration 1:

cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 8.1.0 and < 8.1.19)

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 < 9.1.10)

OR cpe:/o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* (Version >= 10.0.0 and < 10.0.4)

Configuration CCN 1:

cpe:/o:paloaltonetworks:pan-os:8.1.1:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.2:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.3:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.5:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.6:-:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.0:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.2:-:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.8:h4:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.2:h4:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.4:-:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.4:h2:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.6:h2:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.7:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.8:-:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.9:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.1:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.3:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.4:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.11:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.5:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.12:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.6:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.13:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.7:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.1.1:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.8:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.1.0:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.10:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.14:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.1.2:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.16:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.10:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.1.3:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.15:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.9:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.1.4:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.17:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.11:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:8.1.18:*:*:*:*:*:*:*

OR cpe:/o:paloaltonetworks:pan-os:9.0.12:*:*:*:*:*:*:*

Denotes that component is vulnerable