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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
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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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