Zyxel USG ZyWALL CLI Command privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Zyxel USG ZyWALL, USG FLEX 100, USG FLEX 200, USG FLEX 500, USG FLEX 700, USG FLEX 50, USG20, ATP and VPN. This issue affects some unknown processing of the component CLI Command Handler. The manipulation results in privileges management. This vulnerability is identified as CVE-2022-30526. The attack is only possible with local access. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Zyxel USG ZyWALL, USG FLEX 100, USG FLEX 200, USG FLEX 500, USG FLEX 700, USG FLEX 50, USG20, ATP and VPN (Firewall Software). Affected is an unknown part of the component CLI Command Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

The weakness was released 07/19/2022. The advisory is available at zyxel.com. This vulnerability is traded as CVE-2022-30526 since 05/10/2022. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The exploit is shared for download at packetstormsecurity.com. It is declared as highly functional. As 0-day the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

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

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Zyxel Corporation): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/10/2022 🔍
07/19/2022 +70 days 🔍
07/19/2022 +0 days 🔍
06/22/2024 +704 days 🔍

Sourcesinfo

Vendor: zyxel.com

Advisory: zyxel.com
Status: Confirmed

CVE: CVE-2022-30526 (🔍)
GCVE (CVE): GCVE-0-2022-30526
GCVE (VulDB): GCVE-100-204186
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/19/2022 14:13
Updated: 06/22/2024 16:27
Changes: 07/19/2022 14:13 (49), 06/22/2024 16:27 (20)
Complete: 🔍
Cache ID: 216::103

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

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