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CVE-2018-14526

Status Candidate

Overview

An issue was discovered in rsn_supp/wpa.c in wpa_supplicant 2.0 through 2.6. Under certain conditions, the integrity of EAPOL-Key messages is not checked, leading to a decryption oracle. An attacker within range of the Access Point and client can abuse the vulnerability to recover sensitive information.

Related Files

Red Hat Security Advisory 2018-3107-01
Posted Oct 30, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-3107-01 - The wpa_supplicant packages contain an 802.1X Supplicant with support for WEP, WPA, WPA2, 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. Issues addressed include a randomization vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-14526
MD5 | da3a8a18ac61cc589368689fafab6835
Ubuntu Security Notice USN-3745-1
Posted Aug 20, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3745-1 - It was discovered that wpa_supplicant and hostapd incorrectly handled certain messages. An attacker could possibly use this to access sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2018-14526
MD5 | d3b416b4dc1249a96d0bc5af6a871107
FreeBSD Security Advisory - FreeBSD-SA-18:11.hostapd
Posted Aug 15, 2018
Authored by Mathy Vanhoef | Site security.freebsd.org

FreeBSD Security Advisory - When using WPA2, EAPOL-Key frames with the Encrypted flag and without the MIC flag set, the data field was decrypted first without verifying the MIC. When the dta field was encrypted using RC4, for example, when negotiating TKIP as a pairwise cipher, the unauthenticated but decrypted data was subsequently processed. This opened wpa_supplicant(8) to abuse by decryption and recovery of sensitive information contained in EAPOL-Key messages. All users of the WPA2 TKIP pairwise cipher are vulnerable to information, for example, the group key.

tags | advisory
systems | freebsd, bsd
advisories | CVE-2018-14526
MD5 | 6161d24d13a49c91a2677cc51cfcb2a2
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