Bug 2345113 (CVE-2022-37660)

Summary: CVE-2022-37660 hostapd: Public Key Exchange (PKEX) Reuse Vulnerability in hostapd
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in hostapd. This vulnerability allows an attacker to subvert future PKEX associations via passive observation and reuse of public key exchange elements.
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Description OSIDB Bzimport 2025-02-11 23:01:14 UTC 
In hostapd 2.10 and earlier, the PKEX code remains active even after a successful PKEX association. An attacker that successfully bootstrapped public keys with another entity using PKEX in the past, will be able to subvert a future bootstrapping by passively observing public keys, re-using the encrypting element Qi and subtracting it from the captured message M (X = M - Qi). This will result in the public ephemeral key X; the only element required to subvert the PKEX association.