Multiple vulnerabilities in Cybozu Mailwise



| Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2016-4841
CVE-2016-4842
CVE-2016-4843
CVE-2016-4844
CWE-ID CWE-20
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Mailwise
Mobile applications / Apps for mobile phones

Vendor Cybozu

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU39157

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-4841

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mailwise: 5.0.0 - 5.3.2

CPE2.3 External links

https://jvn.jp/en/jp/JVN01353821/index.html
https://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000135.html
https://www.securityfocus.com/bid/92459
https://support.cybozu.com/ja-jp/article/9607


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Information disclosure

EUVDB-ID: #VU39163

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-4842

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Cybozu Mailwise before 5.4.0 allows remote attackers to obtain information on when an email is read.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mailwise: 5.0.0 - 5.3.2

CPE2.3 External links

https://jvn.jp/en/jp/JVN02576342/index.html
https://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000136.html
https://www.securityfocus.com/bid/92460
https://support.cybozu.com/ja-jp/article/9606


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Information disclosure

EUVDB-ID: #VU39164

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-4843

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Cybozu Mailwise before 5.4.0 allows remote attackers to obtain sensitive cookie information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mailwise: 5.0.0 - 5.3.2

CPE2.3 External links

https://jvn.jp/en/jp/JVN03052683/index.html
https://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000137.html
https://www.securityfocus.com/bid/92461
https://support.cybozu.com/ja-jp/article/9654


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Information disclosure

EUVDB-ID: #VU39165

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-4844

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

Cybozu Mailwise before 5.4.0 allows remote attackers to conduct clickjacking attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mailwise: 5.0.0 - 5.3.2

CPE2.3 External links

https://jvn.jp/en/jp/JVN04125292/index.html
https://jvndb.jvn.jp/en/contents/2016/JVNDB-2016-000138.html
https://www.securityfocus.com/bid/92462
https://support.cybozu.com/ja-jp/article/9605


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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