ZyXEL ZyWALL USG Internet Key Exchange Feature Bleichenbacher cryptographic issue

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in ZyXEL ZyWALL USG. Impacted is an unknown function of the component Internet Key Exchange Feature. Executing a manipulation can lead to cryptographic issue (Bleichenbacher). The identification of this vulnerability is CVE-2018-9129. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in ZyXEL ZyWALL USG (Firewall Software) (unknown version). It has been declared as critical. This vulnerability affects an unknown code block of the component Internet Key Exchange Feature. The manipulation with an unknown input leads to a cryptographic issue vulnerability (Bleichenbacher). The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

ZyXEL ZyWALL/USG series devices have a Bleichenbacher vulnerability in their Internet Key Exchange (IKE) handshake implementation used for IPsec based VPN connections.

The bug was discovered 08/13/2018. The weakness was shared 08/15/2018 (Website). The advisory is available at ftp.zyxel.com. This vulnerability was named CVE-2018-9129 since 03/30/2018. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/16/2020). This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k.

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

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Bleichenbacher
Class: Cryptographic issue / Bleichenbacher
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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

03/30/2018 🔍
08/13/2018 +136 days 🔍
08/15/2018 +1 days 🔍
08/15/2018 +0 days 🔍
08/16/2018 +1 days 🔍
03/16/2020 +578 days 🔍

Sourcesinfo

Vendor: zyxel.com

Advisory: ftp.zyxel.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-9129 (🔍)
GCVE (CVE): GCVE-0-2018-9129
GCVE (VulDB): GCVE-100-122974

Entryinfo

Created: 08/16/2018 06:39
Updated: 03/16/2020 09:59
Changes: 08/16/2018 06:39 (58), 03/16/2020 09:59 (2)
Complete: 🔍
Cache ID: 216::103

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