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CVE-2019-13377

MEDIUMCVSS 5.9/10EPSS 2.19%

Last modified

CVE-2019-13377 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 2.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
2.19%

80.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
W1.FiHostapd>= 2.0, <= 2.8
FedoraprojectFedora30
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux19.04
DebianDebian Linux10.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-13377?
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.
How severe is CVE-2019-13377?
CVE-2019-13377 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 2.19% probability of exploitation in the next 30 days.
How do I fix CVE-2019-13377?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST