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CVE-2015-8023

UnknownEPSS 2.58%

Last modified

CVE-2015-8023 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.58% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
2.58%

83.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux15.04
CanonicalUbuntu Linux15.10
StrongswanStrongswan4.2.12
StrongswanStrongswan4.2.13
StrongswanStrongswan4.2.14
StrongswanStrongswan4.2.15
StrongswanStrongswan4.2.16
StrongswanStrongswan4.3.0
StrongswanStrongswan4.3.1
StrongswanStrongswan4.3.2
StrongswanStrongswan4.3.3
StrongswanStrongswan4.3.4
StrongswanStrongswan4.3.5
StrongswanStrongswan4.3.6
StrongswanStrongswan4.3.7
StrongswanStrongswan4.4.0
StrongswanStrongswan4.4.1
StrongswanStrongswan4.5.0
StrongswanStrongswan4.5.1
StrongswanStrongswan4.5.2
StrongswanStrongswan4.5.3
StrongswanStrongswan4.6.0
StrongswanStrongswan4.6.1
StrongswanStrongswan4.6.2
StrongswanStrongswan4.6.3
StrongswanStrongswan4.6.4
StrongswanStrongswan5.0.0
StrongswanStrongswan5.0.1
StrongswanStrongswan5.0.2
StrongswanStrongswan5.0.3
StrongswanStrongswan5.0.4
StrongswanStrongswan5.1.0
StrongswanStrongswan5.1.1
StrongswanStrongswan5.1.2
StrongswanStrongswan5.1.3
StrongswanStrongswan5.2.0
StrongswanStrongswan5.2.1
StrongswanStrongswan5.2.2
StrongswanStrongswan5.2.3
StrongswanStrongswan5.3.0
StrongswanStrongswan5.3.1
StrongswanStrongswan5.3.2
StrongswanStrongswan5.3.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-8023?
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.
How severe is CVE-2015-8023?
Severity scoring for CVE-2015-8023 is pending analysis. The EPSS model estimates a 2.58% probability of exploitation in the next 30 days.
How do I fix CVE-2015-8023?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST