ID

VAR-201710-0209

CVE

CVE-2017-13082

TITLE

Wi-Fi Protected Access (WPA) handshake traffic can be manipulated to induce nonce and session key reuse

DESCRIPTION

Wi-Fi Protected Access (WPA and WPA2) that supports IEEE 802.11r allows reinstallation of the Pairwise Transient Key (PTK) Temporal Key (TK) during the fast BSS transmission (FT) handshake, allowing an attacker within radio range to replay, decrypt, or spoof frames. Wi-Fi Protected Access (WPA, more commonly WPA2) handshake traffic can be manipulated to induce nonce and session key reuse, resulting in key reinstallation by a wireless access point (AP) or client. An attacker within range of an affected AP and client may leverage these vulnerabilities to conduct attacks that are dependent on the data confidentiality protocols being used. Attacks may include arbitrary packet decryption and injection, TCP connection hijacking, HTTP content injection, or the replay of unicast and group-addressed frames. These vulnerabilities are referred to as Key Reinstallation Attacks or "KRACK" attacks. WPA (Wi-Fi Protected Access) is a system that protects wireless computer networks (Wi-Fi). The PTK-TK encryption key reloading vulnerability exists when the WPA2 wireless network receives and processes the retransmitted fast BSS transition reassociation request. WPA2 is prone to multiple security weaknesses. Exploiting these issues may allow an unauthorized user to intercept and manipulate data or disclose sensitive information. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: wpa_supplicant security update Advisory ID: RHSA-2017:2907-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2907 Issue date: 2017-10-17 CVE Names: CVE-2017-13077 CVE-2017-13078 CVE-2017-13080 CVE-2017-13082 CVE-2017-13086 CVE-2017-13087 CVE-2017-13088 ===================================================================== 1. Summary: An update for wpa_supplicant is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2 (IEEE 802.11i / RSN), and various EAP authentication methods. They implement key negotiation with a WPA Authenticator for client stations and controls the roaming and IEEE 802.11 authentication and association of the WLAN driver. A remote attacker within Wi-Fi range could exploit these attacks to decrypt Wi-Fi traffic or possibly inject forged Wi-Fi packets by manipulating cryptographic handshakes used by the WPA2 protocol. (CVE-2017-13077, CVE-2017-13078, CVE-2017-13080, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088) Red Hat would like to thank CERT for reporting these issues. Upstream acknowledges Mathy Vanhoef (University of Leuven) as the original reporter of these issues. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1491692 - CVE-2017-13077 wpa_supplicant: Reinstallation of the pairwise key in the 4-way handshake 1491693 - CVE-2017-13078 wpa_supplicant: Reinstallation of the group key in the 4-way handshake 1491696 - CVE-2017-13080 wpa_supplicant: Reinstallation of the group key in the group key handshake 1491698 - CVE-2017-13082 wpa_supplicant: Accepting a retransmitted FT Reassociation Request and reinstalling the pairwise key while processing it 1500302 - CVE-2017-13086 wpa_supplicant: reinstallation of the Tunneled Direct-Link Setup (TDLS) PeerKey (TPK) key in the TDLS handshake 1500303 - CVE-2017-13087 wpa_supplicant: reinstallation of the group key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame 1500304 - CVE-2017-13088 wpa_supplicant: reinstallation of the integrity group key (IGTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: wpa_supplicant-2.6-5.el7_4.1.src.rpm x86_64: wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: wpa_supplicant-2.6-5.el7_4.1.src.rpm x86_64: wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: wpa_supplicant-2.6-5.el7_4.1.src.rpm aarch64: wpa_supplicant-2.6-5.el7_4.1.aarch64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.aarch64.rpm ppc64: wpa_supplicant-2.6-5.el7_4.1.ppc64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.ppc64.rpm ppc64le: wpa_supplicant-2.6-5.el7_4.1.ppc64le.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.ppc64le.rpm s390x: wpa_supplicant-2.6-5.el7_4.1.s390x.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.s390x.rpm x86_64: wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: wpa_supplicant-2.6-5.el7_4.1.src.rpm x86_64: wpa_supplicant-2.6-5.el7_4.1.x86_64.rpm wpa_supplicant-debuginfo-2.6-5.el7_4.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2017-13077 https://access.redhat.com/security/cve/CVE-2017-13078 https://access.redhat.com/security/cve/CVE-2017-13080 https://access.redhat.com/security/cve/CVE-2017-13082 https://access.redhat.com/security/cve/CVE-2017-13086 https://access.redhat.com/security/cve/CVE-2017-13087 https://access.redhat.com/security/cve/CVE-2017-13088 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/kracks 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. Those vulnerabilities applies to both the access point (implemented in hostapd) and the station (implemented in wpa_supplicant). An attacker exploiting the vulnerabilities could force the vulnerable system to reuse cryptographic session keys, enabling a range of cryptographic attacks against the ciphers used in WPA1 and WPA2. For the stable distribution (stretch), these problems have been fixed in version 2:2.4-1+deb9u1. For the testing distribution (buster), these problems have been fixed in version 2:2.4-1.1. For the unstable distribution (sid), these problems have been fixed in version 2:2.4-1.1. We recommend that you upgrade your wpa packages. ========================================================================== Ubuntu Security Notice USN-3455-1 October 16, 2017 wpa vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 17.04 - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in wpa_supplicant. Software Description: - wpa: client support for WPA and WPA2 Details: Mathy Vanhoef discovered that wpa_supplicant and hostapd incorrectly handled WPA2. (CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088) Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters. A remote attacker could use this issue to cause a denial of service. (CVE-2016-4476) Imre Rad discovered that wpa_supplicant and hostapd incorrectly handled invalid characters in passphrase parameters. A local attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2016-4477) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: hostapd 2.4-0ubuntu9.1 wpasupplicant 2.4-0ubuntu9.1 Ubuntu 16.04 LTS: hostapd 2.4-0ubuntu6.2 wpasupplicant 2.4-0ubuntu6.2 Ubuntu 14.04 LTS: hostapd 2.1-0ubuntu1.5 wpasupplicant 2.1-0ubuntu1.5 After a standard system update you need to reboot your computer to make all the necessary changes. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-17:07.wpa Security Advisory The FreeBSD Project Topic: WPA2 protocol vulnerability Category: contrib Module: wpa Announced: 2017-10-16 Credits: Mathy Vanhoef Affects: All supported versions of FreeBSD. Corrected: 2017-10-17 17:30:18 UTC (stable/11, 11.1-STABLE) 2017-10-17 17:57:18 UTC (releng/11.1, 11.1-RELEASE-p2) 2017-10-17 17:56:03 UTC (releng/11.0, 11.0-RELEASE-p13) 2017-10-19 03:18:22 UTC (stable/10, 10.4-STABLE) 2017-10-19 03:20:17 UTC (releng/10.4, 10.4-RELEASE-p1) 2017-10-19 03:19:42 UTC (releng/10.3, 10.3-RELEASE-p22) CVE Name: CVE-2017-13077, CVE-2017-13078, CVE-2017-13079, CVE-2017-13080, CVE-2017-13081, CVE-2017-13082, CVE-2017-13086, CVE-2017-13087, CVE-2017-13088 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>. 0. Revision history v1.0 2017-10-17 Initial release. v1.1 2017-10-19 Add patches for 10.x releases. I. hostapd and wpa_supplicant are implementations of user space daemon for access points and wireless client that implements the WPA2 protocol. II. 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. III. 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. IV. Workaround An updated version of wpa_supplicant is available in the FreeBSD Ports Collection. Install version 2.6_2 or later of the security/wpa_supplicant port/pkg. Once installed, update /etc/rc.conf to use the new binary: wpa_supplicant_program="/usr/local/sbin/wpa_supplicant" and restart networking. An updated version of hostapd is available in the FreeBSD Ports Collection. Install version 2.6_1 or later of the net/hostapd port/pkg. Once installed, update /etc/rc.conf to use the new binary: hostapd_program="/usr/local/sbin/hostapd" and restart hostapd. V. Solution Perform one of the following: 1) Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. Restart the Wi-Fi network interfaces/hostapd or reboot the system. 2) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install Restart the Wi-Fi network interfaces/hostapd or reboot the system. 3) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. [FreeBSD 11.0-RELEASE, 11.1-RELEASE, and 11-STABLE] # fetch https://security.FreeBSD.org/patches/SA-17:07/wpa-11.patch # fetch https://security.FreeBSD.org/patches/SA-17:07/wpa-11.patch.asc # gpg --verify wpa-11.patch.asc [FreeBSD 10.3-RELEASE, 10.4-RELEASE, and 10-STABLE] # fetch https://security.FreeBSD.org/patches/SA-17:07/wpa-10.patch # fetch https://security.FreeBSD.org/patches/SA-17:07/wpa-10.patch.asc # gpg --verify wpa-10.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile the operating system using buildworld and installworld as described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>. Restart the applicable daemons, or reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/11/ r324697 releng/11.0/ r324698 releng/11.1/ r324699 stable/10/ r324739 releng/10.3/ r324740 releng/10.4/ r324741 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN> VII. References <URL:https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt> <URL:https://www.krackattacks.com/> The latest revision of this advisory is available at <URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-17:07.wpa.asc> -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEEHPf/b631yp++G4yy7Wfs1l3PaucFAlnoGpNfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDFD RjdGRjZGQURGNUNBOUZCRTFCOENCMkVENjdFQ0Q2NURDRjZBRTcACgkQ7Wfs1l3P auc7WBAAm27w+fujv5sJsRxauUMopTVtRh5utwbDuoHTP+L+RCWmQfVBmueNQ0gf uJzMNxBIkbtY9LvyukpRsH3iD7mh26c0pd9rxxkkr4F96C9B5+W0amxJF1gdm54/ F/50FpY+lo7cNs5tiBjypPrg8UOBBI/1G4XR7130XC0HjaTwt1ngZ0oQUWUMSsIp gN5ZfPul81WPWd1NqF+vyObcJhwq/Y1uoexoO27o7GQCFZoL3enZy8c4f1xqMlVM 4HHkTgNGac6E0aW+ArH4J0DFFAOJXPqF8rdt+9XINfoBbtliIyOixJ4oh1n6eAR0 VpBWZKFNyXSlUKIvDGa+LDhxgL1jJXV0ABSyKlUOijdmr3bbbiQE9MW/MNv2AFTd OAFQ0QQtm9KCWp5JLh+FPIb/kR2l7MOUP+yz4zFcJpdGtl9tDLyPN8vRTq60bY8O y7tBcf/SMqkd/AIFdchL4zrOguKnRARydIlwTarp8wtAQI3MKSsa1B0wgsDtlL6K xfdjnwWMKvKKlNOW16e1WXXO0n/ucHV4njBE+bGPro3jLgXP2/WFZpIGAR3I4xrr SdD4AxSNiR9f3bL7LRfMIbugJAylWNSlTLWUOVUv0/ONh85LqbcCj13NI230B64K ETx2QOZgKnCs2oDNiw4aQHb7kvi2w94Iw/R1sAPkkxYJWO3reyE= =h/5q -----END PGP SIGNATURE----- . Here are the details from the Slackware 14.2 ChangeLog: +--------------------------+ patches/packages/wpa_supplicant-2.6-i586-1_slack14.2.txz: Upgraded. This update includes patches to mitigate the WPA2 protocol issues known as "KRACK" (Key Reinstallation AttaCK), which may be used to decrypt data, hijack TCP connections, and to forge and inject packets. For more information, see: https://www.krackattacks.com/ https://w1.fi/security/2017-1/wpa-packet-number-reuse-with-replayed-messages.txt https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13077 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13078 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13079 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13080 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13081 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13082 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13084 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13086 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13087 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13088 (* Security fix *) +--------------------------+ Where to find the new packages: +-----------------------------+ Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating FTP and rsync hosting to the Slackware project! :-) Also see the "Get Slack" section on http://slackware.com for additional mirror sites near you. Updated package for Slackware 14.0: ftp://ftp.slackware.com/pub/slackware/slackware-14.0/patches/packages/wpa_supplicant-2.6-i486-1_slack14.0.txz Updated package for Slackware x86_64 14.0: ftp://ftp.slackware.com/pub/slackware/slackware64-14.0/patches/packages/wpa_supplicant-2.6-x86_64-1_slack14.0.txz Updated package for Slackware 14.1: ftp://ftp.slackware.com/pub/slackware/slackware-14.1/patches/packages/wpa_supplicant-2.6-i486-1_slack14.1.txz Updated package for Slackware x86_64 14.1: ftp://ftp.slackware.com/pub/slackware/slackware64-14.1/patches/packages/wpa_supplicant-2.6-x86_64-1_slack14.1.txz Updated package for Slackware 14.2: ftp://ftp.slackware.com/pub/slackware/slackware-14.2/patches/packages/wpa_supplicant-2.6-i586-1_slack14.2.txz Updated package for Slackware x86_64 14.2: ftp://ftp.slackware.com/pub/slackware/slackware64-14.2/patches/packages/wpa_supplicant-2.6-x86_64-1_slack14.2.txz Updated package for Slackware -current: ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/wpa_supplicant-2.6-i586-2.txz Updated package for Slackware x86_64 -current: ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/n/wpa_supplicant-2.6-x86_64-2.txz MD5 signatures: +-------------+ Slackware 14.0 package: d8ecfaadb50b3547967ab53733ffc019 wpa_supplicant-2.6-i486-1_slack14.0.txz Slackware x86_64 14.0 package: f25216d28800504ce498705da7c9a825 wpa_supplicant-2.6-x86_64-1_slack14.0.txz Slackware 14.1 package: 15c61050e4bab2581757befd86be74c0 wpa_supplicant-2.6-i486-1_slack14.1.txz Slackware x86_64 14.1 package: 49fd537a520338744f7757615556d352 wpa_supplicant-2.6-x86_64-1_slack14.1.txz Slackware 14.2 package: c5539f40c8510af89be92945f0f80185 wpa_supplicant-2.6-i586-1_slack14.2.txz Slackware x86_64 14.2 package: 4c527ff84fcdfd7839f217bbce2e4ae4 wpa_supplicant-2.6-x86_64-1_slack14.2.txz Slackware -current package: 28bd88a54e96368f7a7020c1f5fb67fe n/wpa_supplicant-2.6-i586-2.txz Slackware x86_64 -current package: 464fc6b48d1ac077f47e9a3a8534c160 n/wpa_supplicant-2.6-x86_64-2.txz Installation instructions: +------------------------+ Upgrade the package as root: # upgradepkg wpa_supplicant-2.6-i586-1_slack14.2.txz +-----+ Slackware Linux Security Team http://slackware.com/gpg-key security@slackware.com +------------------------------------------------------------------------+ | To leave the slackware-security mailing list: | +------------------------------------------------------------------------+ | Send an email to majordomo@slackware.com with this text in the body of | | the email message: | | | | unsubscribe slackware-security | | | | You will get a confirmation message back containing instructions to | | complete the process. 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IOT TAXONOMY

AFFECTED PRODUCTS