Clavister cOS Core up to 11.00.10/11.20.05/12.00.08 IKEv1 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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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Clavister cOS Core up to 11.00.10/11.20.05/12.00.08. This issue affects some unknown processing of the component IKEv1. Performing a manipulation results in cryptographic issue (Bleichenbacher). This vulnerability was named CVE-2018-8753. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Clavister cOS Core up to 11.00.10/11.20.05/12.00.08. It has been classified as critical. This affects an unknown code of the component IKEv1. The manipulation with an unknown input leads to a cryptographic issue vulnerability (Bleichenbacher). CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The IKEv1 implementation in Clavister cOS Core before 11.00.11, 11.20.xx before 11.20.06, and 12.00.xx before 12.00.09 allows remote attackers to decrypt RSA-encrypted nonces by leveraging a Bleichenbacher attack.

The bug was discovered 08/13/2018. The weakness was presented 08/15/2018 (Website). The advisory is shared at clavister.com. This vulnerability is uniquely identified as CVE-2018-8753 since 03/16/2018. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue.

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 $0-$5k.

Upgrading to version 11.00.11, 11.20.06 or 12.00.09 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cOS Core 11.00.11/11.20.06/12.00.09

Timelineinfo

03/16/2018 🔍
08/13/2018 +149 days 🔍
08/15/2018 +1 days 🔍
08/15/2018 +0 days 🔍
08/16/2018 +1 days 🔍
03/16/2020 +578 days 🔍

Sourcesinfo

Advisory: clavister.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-8753 (🔍)
GCVE (CVE): GCVE-0-2018-8753
GCVE (VulDB): GCVE-100-122973

Entryinfo

Created: 08/16/2018 06:22
Updated: 03/16/2020 09:53
Changes: 08/16/2018 06:22 (60), 03/16/2020 09:53 (2)
Complete: 🔍
Cache ID: 216::103

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