CVE-2015-8023

Description

The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.52%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html vendor advisory
https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html
http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html vendor advisory
http://www.securityfocus.com/bid/84947 vdb entry
http://www.debian.org/security/2015/dsa-3398 vendor advisory
http://www.ubuntu.com/usn/USN-2811-1 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8023?
CVE-2015-8023 has been scored as a medium severity vulnerability.
How to fix CVE-2015-8023?
To fix CVE-2015-8023, 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-2015-8023 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8023 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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