CVE-2018-14526 Information disclosure in n/a

Medium 6.5 Published 8 Aug 2018 Updated 5 Aug 2024

An attacker within range can exploit a decryption oracle in wpa_supplicant to recover sensitive information from EAPOL-Key messages.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2018-14526?

CVE-2018-14526 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 8 Aug 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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: CWE-924

Which versions are affected by CVE-2018-14526?

It affects 3 products.

Linux distribution packages (22)

`wpa_supplicant` Red Hat:enterprise_linux:7::client	All versions	`1:2.6-12.el7`
`wpa_supplicant-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`1:2.6-12.el7`
`wpa_supplicant` Red Hat:enterprise_linux:7::computenode	All versions	`1:2.6-12.el7`
`wpa_supplicant-debuginfo` Red Hat:enterprise_linux:7::computenode	All versions	`1:2.6-12.el7`
`wpa_supplicant` Red Hat:enterprise_linux:7::server	All versions	`1:2.6-12.el7`
`wpa_supplicant-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`1:2.6-12.el7`
`wpa_supplicant` Red Hat:enterprise_linux:7::workstation	All versions	`1:2.6-12.el7`
`wpa_supplicant-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`1:2.6-12.el7`
`wpa_supplicant` SUSE:Enterprise Storage 4	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Desktop 12 SP3	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Desktop 12 SP4	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Module for Basesystem 15	All versions	`2.6-4.11.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12 SP1-LTSS	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12 SP2-BCL	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12 SP2-LTSS	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12 SP3	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12 SP4	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server 12-LTSS	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server for SAP Applications 12 SP2	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server for SAP Applications 12 SP3	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`2.6-15.10.1`
`wpa_supplicant` SUSE:OpenStack Cloud 7	All versions	`2.6-15.10.1`

Products include Canonical Ubuntu Linux, Debian Debian Linux, W1.fi Wpa Supplicant.

How do I fix CVE-2018-14526?

Apply the vendor's patch.

Is CVE-2018-14526 being exploited?

There is no known exploitation of CVE-2018-14526 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2018-14526, DEBIAN-CVE-2018-14526, DLA-1462-1, GHSA-p89p-gprq-frv8, MGASA-2018-0348, RHSA-2018:3107 and 4 more.