Zyxel ATP/USG FLEX/VPN GRE Configuration os command injection

CVSS Meta Temp Score
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CTI Interest Score
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8.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Zyxel ATP, USG FLEX and VPN and classified as critical. This vulnerability affects unknown code of the component GRE Configuration Handler. The manipulation results in os command injection. This vulnerability is identified as CVE-2023-33012. The attack can only be performed from the local network. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Zyxel ATP, USG FLEX and VPN (Network Encryption Software) (the affected version is unknown). Affected is an unknown code of the component GRE Configuration Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A command injection vulnerability in the configuration parser of the Zyxel ATP series firmware versions 5.10 through 5.36 Patch 2, USG FLEX series firmware versions 5.00 through 5.36 Patch 2, USG FLEX 50(W) series firmware versions 5.10 through 5.36 Patch 2, USG20(W)-VPN series firmware versions 5.10 through 5.36 Patch 2, and VPN series firmware versions 5.00 through 5.36 Patch 2, could allow an unauthenticated, LAN-based attacker to execute some OS commands by using a crafted GRE configuration when the cloud management mode is enabled.

The weakness was released 07/18/2023. The advisory is shared for download at zyxel.com. This vulnerability is traded as CVE-2023-33012 since 05/17/2023. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The exploit is shared for download at packetstormsecurity.com. It is declared as highly functional.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CNA Base Score: 8.8
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: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/17/2023 🔍
07/18/2023 +62 days 🔍
07/18/2023 +0 days 🔍
07/04/2024 +352 days 🔍

Sourcesinfo

Vendor: zyxel.com

Advisory: zyxel.com
Status: Confirmed

CVE: CVE-2023-33012 (🔍)
GCVE (CVE): GCVE-0-2023-33012
GCVE (VulDB): GCVE-100-234336
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/18/2023 09:53
Updated: 07/04/2024 20:23
Changes: 07/18/2023 09:53 (48), 07/04/2024 20:23 (19)
Complete: 🔍
Cache ID: 216::103

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