Debian: DSA-3398-1: strongswan security update

    Date16 Nov 2015
    CategoryDebian
    109
    Posted ByLinuxSecurity Advisories
    Tobias Brunner found an authentication bypass vulnerability in strongSwan, an IKE/IPsec suite. Due to insufficient validation of its local state the server
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    Debian Security Advisory DSA-3398-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                        Yves-Alexis Perez
    November 16, 2015                     https://www.debian.org/security/faq
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    Package        : strongswan
    CVE ID         : CVE-2015-8023
    
    Tobias Brunner found an authentication bypass vulnerability in
    strongSwan, an IKE/IPsec suite.
    
    Due to insufficient validation of its local state the server
    implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin
    can be tricked into successfully concluding the authentication without
    providing valid credentials.
    
    It's possible to recognize such attacks by looking at the server logs.
    The following log message would be seen during the client
    authentication:
    
      EAP method EAP_MSCHAPV2 succeeded, no MSK established
    
    For the oldstable distribution (wheezy), this problem has been fixed
    in version 4.5.2-1.5+deb7u8.
    
    For the stable distribution (jessie), this problem has been fixed in
    version 5.2.1-6+deb8u2.
    
    For the testing distribution (stretch), this problem has been fixed
    in version 5.3.3-3.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 5.3.3-3.
    
    We recommend that you upgrade your strongswan packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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