CVE-2017-13079

Wi-Fi Protected Access (WPA and WPA2) that supports IEEE 802.11w allows reinstallation of the Integrity Group Temporal Key (IGTK) during the four-way handshake, allowing an attacker within radio range to spoof frames from access points to clients.

Weakness

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Affected Software

Potential Mitigations

• Use a well-vetted algorithm that is currently considered to be strong by experts in the field, and select well-tested implementations with adequate length seeds.
• In general, if a pseudo-random number generator is not advertised as being cryptographically secure, then it is probably a statistical PRNG and should not be used in security-sensitive contexts.
• Pseudo-random number generators can produce predictable numbers if the generator is known and the seed can be guessed. A 256-bit seed is a good starting point for producing a “random enough” number.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/112.html
• https://cwe.mitre.org/data/definitions/485.html
• https://cwe.mitre.org/data/definitions/59.html

References

• http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00020.html
• http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00023.html
• http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00024.html
• http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-007.txt
• http://www.debian.org/security/2017/dsa-3999
• http://www.kb.cert.org/vuls/id/228519
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.securityfocus.com/bid/101274
• http://www.securitytracker.com/id/1039573
• http://www.securitytracker.com/id/1039576
• http://www.securitytracker.com/id/1039577
• http://www.securitytracker.com/id/1039578
• http://www.securitytracker.com/id/1039581
• http://www.securitytracker.com/id/1039585
• http://www.ubuntu.com/usn/USN-3455-1
• https://access.redhat.com/security/vulnerabilities/kracks
• https://cert-portal.siemens.com/productcert/pdf/ssa-901333.pdf
• https://cert.vde.com/en-us/advisories/vde-2017-005
• https://lists.debian.org/debian-lts-announce/2018/11/msg00015.html
• https://security.FreeBSD.org/advisories/FreeBSD-SA-17:07.wpa.asc
• https://security.gentoo.org/glsa/201711-03
• https://source.android.com/security/bulletin/2017-11-01
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbhf03792en_us
• https://support.lenovo.com/us/en/product_security/LEN-17420
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171016-wpa
• https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt
• https://www.krackattacks.com/