ESB-2017.3134 - [FreeBSD] WPA2 protocol: Multiple vulnerabilities 2017-12-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.3134
                        WPA2 protocol vulnerability
                              7 December 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           WPA2 protocol
Publisher:         FreeBSD
Operating System:  FreeBSD
Impact/Access:     Increased Privileges -- Remote/Unauthenticated
                   Reduced Security     -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-1308 CVE-2017-1307 

Reference:         ESB-2017.1746

Original Bulletin: 
   http://www.vuxml.org/freebsd/1f8de723-dab3-11e7-b5af-a4badb2f4699.html

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FreeBSD -- WPA2 protocol vulnerability

Affected packages

11.1 <= FreeBSD < 11.1_2

11.0 <= FreeBSD < 11.0_13

10.4 <= FreeBSD < 10.4_1

10.3 <= FreeBSD < 10.3_22

Details

VuXML ID 1f8de723-dab3-11e7-b5af-a4badb2f4699

Discovery 2017-10-16

Entry 2017-12-06

Problem Description:

A vulnerability was found in how a number of implementations can be triggered
to reconfigure WPA/WPA2/RSN keys (TK, GTK, or IGTK) by replaying a specific 
frame that is used to manage the keys.

Impact:

Such reinstallation of the encryption key can result in two different types of
vulnerabilities: disabling replay protection and significantly reducing the 
security of encryption to the point of allowing frames to be decrypted or some
parts of the keys to be determined by an attacker depending on which cipher is
used.

References

CVE Name CVE-2017-1307

CVE Name CVE-2017-1308

FreeBSD Advisory SA-17:07.wpa

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