Vulnerability Details : CVE-2019-9494

The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
Published 2019-04-17 14:29:04
Updated 2021-11-03 19:50:30
Source CERT/CC
View at NVD,   CVE.org

Products affected by CVE-2019-9494

Exploit prediction scoring system (EPSS) score for CVE-2019-9494

EPSS FAQ
1.47%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-9494

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
 NIST
5.9
 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.2
3.6
 NIST

CWE ids for CVE-2019-9494

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)
  • Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: cret@cert.org (Secondary)
  • The code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere.
    Assigned by: cret@cert.org (Secondary)

References for CVE-2019-9494

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