CVE-2018-14526 — An issue was discovered in rsn_supp/wpa

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 recove

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-08-08T19:00:00.000Z
• Last modified: 2024-08-05T09:29:51.701Z

09References

• papers.mathyvanhoef.com — https://papers.mathyvanhoef.com/woot2018.pdf
• www.securitytracker.com — http://www.securitytracker.com/id/1041438
• w1.fi — https://w1.fi/security/2018-1/unauthenticated-eapol-key-decryption.txt
• security.FreeBSD.org — https://security.FreeBSD.org/advisories/FreeBSD-SA-18:11.hostapd.asc
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:3107
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/08/msg00009.html
• usn.ubuntu.com — https://usn.ubuntu.com/3745-1/
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00013.html
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-344983.pdf
• www.us-cert.gov — https://www.us-cert.gov/ics/advisories/icsa-19-344-01