VDB-100435 · CVE-2016-4841 · BID 92459

Cybozu Mailwise up to 5.3.x Email Header input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Cybozu Mailwise up to 5.3.x. Impacted is an unknown function of the component Email Header Handler. This manipulation causes input validation. This vulnerability is registered as CVE-2016-4841. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cybozu Mailwise up to 5.3.x and classified as critical. Affected by this vulnerability is some unknown processing of the component Email Header Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Cybozu Mailwise before 5.4.0 allows remote attackers to inject arbitrary email headers.

The bug was discovered 08/16/2016. The weakness was published 04/21/2017 (Website). It is possible to read the advisory at jvn.jp. This vulnerability is known as CVE-2016-4841 since 05/17/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 248 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 5.4.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92459†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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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OpenVAS ID: 801056
OpenVAS Name: Cybozu Mailwise Multiple Vulnerabilities Aug-2016
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mailwise 5.4.0

Timelineinfo

05/17/2016 🔍
08/16/2016 +91 days 🔍
08/16/2016 +0 days 🔍
04/21/2017 +248 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍
04/21/2017 +0 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

Advisory: jvn.jp
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4841 (🔍)
GCVE (CVE): GCVE-0-2016-4841
GCVE (VulDB): GCVE-100-100435
SecurityFocus: 92459 - Cybozu Mailwise CVE-2016-4841 Email Header Injection Vulnerability
OSVDB: - CVE-2016-4841 - Cybozu - MailWise - Email Header Injection Issue

Entryinfo

Created: 04/21/2017 21:48
Changes: 04/21/2017 21:48 (70)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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