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Palo Alto Networks Product Security Incident Response TeamPA-CVE-2021-3047

HistoryAug 11, 2021 - 4:00 p.m.

PAN-OS: Weak Cryptography Used in Web Interface Authentication

2021-08-1116:00:00

Palo Alto Networks Product Security Incident Response Team

securityadvisories.paloaltonetworks.com

3.5 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:N/I:P/A:N

4.2 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

0.001 Low

EPSS

Percentile

22.9%

JSON

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.

Work around:
There are no known workarounds for this issue.

CPENameOperatorVersion
pan-oslt8.1.19
pan-oslt9.0.14
pan-oslt10.0.4
pan-oslt9.1.10

Name	Operator	Version
pan-os	lt	8.1.19
pan-os	lt	9.0.14
pan-os	lt	10.0.4
pan-os	lt	9.1.10

References

security.paloaltonetworks.com/CVE-2021-3047

3.5 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:S/C:N/I:P/A:N

4.2 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

0.001 Low

EPSS

Percentile

22.9%

JSON

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