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.
Weakness
The product establishes a communication channel with an endpoint and receives a message from that endpoint, but it does not sufficiently ensure that the message was not modified during transmission.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 14.04 (including) | 14.04 (including) |
| Ubuntu_linux | Canonical | 16.04 (including) | 16.04 (including) |
| Ubuntu_linux | Canonical | 18.04 (including) | 18.04 (including) |
| Red Hat Enterprise Linux 7 | RedHat | wpa_supplicant-1:2.6-12.el7 | * |
| Wpa | Ubuntu | bionic | * |
| Wpa | Ubuntu | devel | * |
| Wpa | Ubuntu | esm-infra-legacy/trusty | * |
| Wpa | Ubuntu | esm-infra/bionic | * |
| Wpa | Ubuntu | esm-infra/xenial | * |
| Wpa | Ubuntu | trusty | * |
| Wpa | Ubuntu | trusty/esm | * |
| Wpa | Ubuntu | xenial | * |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00013.html
- http://www.securitytracker.com/id/1041438
- https://access.redhat.com/errata/RHSA-2018:3107
- https://cert-portal.siemens.com/productcert/pdf/ssa-344983.pdf
- https://lists.debian.org/debian-lts-announce/2018/08/msg00009.html
- https://papers.mathyvanhoef.com/woot2018.pdf
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:11.hostapd.asc
- https://usn.ubuntu.com/3745-1/
- https://w1.fi/security/2018-1/unauthenticated-eapol-key-decryption.txt
- https://www.us-cert.gov/ics/advisories/icsa-19-344-01
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00013.html
- http://www.securitytracker.com/id/1041438
- https://access.redhat.com/errata/RHSA-2018:3107
- https://cert-portal.siemens.com/productcert/pdf/ssa-344983.pdf
- https://lists.debian.org/debian-lts-announce/2018/08/msg00009.html
- https://papers.mathyvanhoef.com/woot2018.pdf
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:11.hostapd.asc
- https://usn.ubuntu.com/3745-1/
- https://w1.fi/security/2018-1/unauthenticated-eapol-key-decryption.txt
- https://www.us-cert.gov/ics/advisories/icsa-19-344-01