CVE-2019-13377

moderate-risk
Published 2019-08-15

The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.

Do I need to act?

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0.70% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (5)

Affected Vendors

Debian Canonical Fedoraproject W1.Fi

References (12)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Mailing List https://seclists.org/bugtraq/2019/Sep/56
Third Party Advisory https://usn.ubuntu.com/4098-1/
Mailing List https://w1.fi/cgit/hostap/commit/?id=147bf7b88a9c231322b5b574263071ca6dbb0503
Mailing List https://w1.fi/cgit/hostap/commit/?id=cd803299ca485eb857e37c88f973fccfbb8600e5
Third Party Advisory https://www.debian.org/security/2019/dsa-4538
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Mailing List https://seclists.org/bugtraq/2019/Sep/56
Third Party Advisory https://usn.ubuntu.com/4098-1/
Mailing List https://w1.fi/cgit/hostap/commit/?id=147bf7b88a9c231322b5b574263071ca6dbb0503
Mailing List https://w1.fi/cgit/hostap/commit/?id=cd803299ca485eb857e37c88f973fccfbb8600e5
Third Party Advisory https://www.debian.org/security/2019/dsa-4538
32
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 12/34 · Low