VDB-186490 · CVE-2021-3056 · GCVE-0-2021-3056

Palo Alto PAN-OS up to 8.1.19/9.0.13/9.1.8/10.0.0 GlobalProtect Clientless VPN buffer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Palo Alto PAN-OS up to 8.1.19/9.0.13/9.1.8/10.0.0. The impacted element is an unknown function of the component GlobalProtect Clientless VPN. Executing a manipulation can lead to buffer overflow. This vulnerability is registered as CVE-2021-3056. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Palo Alto PAN-OS up to 8.1.19/9.0.13/9.1.8/10.0.0 (Firewall Software). This vulnerability affects an unknown part of the component GlobalProtect Clientless VPN. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 11/10/2021. The advisory is available at security.paloaltonetworks.com. This vulnerability was named CVE-2021-3056 since 01/06/2021. The technical details are unknown and an exploit is not available.

Upgrading to version 8.1.20, 9.0.14, 9.1.9 or 10.0.1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Firewall Software

Vendor

Palo Alto

Name

PAN-OS

Version

License

commercial

Website

Vendor: https://www.paloaltonetworks.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (Palo Alto Networks, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PAN-OS 8.1.20/9.0.14/9.1.9/10.0.1

Timelineinfo

01/06/2021 🔍
11/10/2021 +308 days 🔍
11/10/2021 +0 days 🔍
11/12/2021 +2 days 🔍

Sourcesinfo

Vendor: paloaltonetworks.com

Advisory: security.paloaltonetworks.com
Status: Confirmed

CVE: CVE-2021-3056 (🔍)
GCVE (CVE): GCVE-0-2021-3056
GCVE (VulDB): GCVE-100-186490

Entryinfo

Created: 11/10/2021 20:17
Updated: 11/12/2021 14:18
Changes: 11/10/2021 20:17 (50), 11/12/2021 14:18 (1)
Complete: 🔍
Cache ID: 216::103