Cybozu Remote Service up to 3.1.8 Client Certificates Management Screen input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Cybozu Remote Service up to 3.1.8. The impacted element is an unknown function of the component Client Certificates Management Screen. Performing a manipulation results in input validation. This vulnerability was named CVE-2018-16172. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cybozu Remote Service up to 3.1.8. This affects some unknown processing of the component Client Certificates Management Screen. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

Improper countermeasure against clickjacking attack in client certificates management screen was discovered in Cybozu Remote Service 3.0.0 to 3.1.8, that allows remote attackers to trick a user to delete the registered client certificate.

The bug was discovered 12/10/2018. The weakness was presented 01/09/2019 (Website). It is possible to read the advisory at jvn.jp. This vulnerability is uniquely identified as CVE-2018-16172 since 08/30/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $0-$5k.

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

See VDB-128880, VDB-128881 and VDB-128882 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Class: Input validation
CWE: CWE-20
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

08/30/2018 🔍
12/10/2018 +102 days 🔍
01/09/2019 +30 days 🔍
01/09/2019 +0 days 🔍
01/10/2019 +1 days 🔍
04/27/2020 +473 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

Advisory: jvn.jp
Status: Not defined

CVE: CVE-2018-16172 (🔍)
GCVE (CVE): GCVE-0-2018-16172
GCVE (VulDB): GCVE-100-128883
See also: 🔍

Entryinfo

Created: 01/10/2019 13:52
Updated: 04/27/2020 16:15
Changes: 01/10/2019 13:52 (58), 04/27/2020 16:15 (1)
Complete: 🔍
Cache ID: 216::103

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