CVE-2018-0691

Description

Multiple +Message Apps (Softbank +Message App for Android prior to version 10.1.7, Softbank +Message App for iOS prior to version 1.1.23, NTT DOCOMO +Message App for Android prior to version 42.40.2800, NTT DOCOMO +Message App for iOS prior to version 1.1.23, KDDI +Message App for Android prior to version 1.0.6, and KDDI +Message App for iOS prior to version 1.1.23) do not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory au.com Vendor Advisory co.jp Vendor Advisory softbank.jp
Affected: Softbank, NTT docomo, KDDI Multiple +Message Apps (Softbank +Message App for Android prior to version 10.1.7, Softbank +Message App for iOS prior to version 1.1.23, NTT DOCOMO +Message App for Android prior to version 42.40.2800, NTT DOCOMO +Message App for iOS prior to version 1.1.23, KDDI +Message App for Android prior to version 1.0.6, and KDDI +Message App for iOS prior to version 1.1.23)
Published at:
Updated at:

References

Link Tags
https://www.au.com/information/notice_mobile/service/2018-002/ patch vendor advisory
https://www.softbank.jp/mobile/info/personal/news/service/20180927a/ patch vendor advisory
http://jvn.jp/en/jp/JVN37288228/index.html third party advisory
https://www.nttdocomo.co.jp/info/notice/page/180927_00.html patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-0691?
CVE-2018-0691 has been scored as a medium severity vulnerability.
How to fix CVE-2018-0691?
To fix CVE-2018-0691, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-0691 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-0691 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-0691?
CVE-2018-0691 affects Softbank, NTT docomo, KDDI Multiple +Message Apps (Softbank +Message App for Android prior to version 10.1.7, Softbank +Message App for iOS prior to version 1.1.23, NTT DOCOMO +Message App for Android prior to version 42.40.2800, NTT DOCOMO +Message App for iOS prior to version 1.1.23, KDDI +Message App for Android prior to version 1.0.6, and KDDI +Message App for iOS prior to version 1.1.23).
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