CVE-2021-3054

08.09.2021, 17:15

A time-of-check to time-of-use (TOCTOU) race condition vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator with permission to upload plugins to execute arbitrary code with root user privileges. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11; PAN-OS 10.0 versions earlier than PAN-OS 10.0.7; PAN-OS 10.1 versions earlier than PAN-OS 10.1.2. This issue does not affect Prisma Access.

TOCTOU

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.2 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
palo_alto	CNA	7.2 HIGH	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 69%

Vendor	Product	Version
paloaltonetworks	pan-os	8.1.0 ≤ 𝑥 < 8.1.20
paloaltonetworks	pan-os	9.0.0 ≤ 𝑥 < 9.0.14
paloaltonetworks	pan-os	9.1.0 ≤ 𝑥 < 9.1.11
paloaltonetworks	pan-os	10.0.0 ≤ 𝑥 < 10.0.7
paloaltonetworks	pan-os	10.1.0 ≤ 𝑥 < 10.1.2

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

References

https://security.paloaltonetworks.com/CVE-2021-3054