漏洞信息
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Vulnerability Title
OpenBSD ieee80211_crypto_tkip.c TKIP MIC Countermeasure Logic Inversion DoS
Vulnerability Description
OpenBSD before commit 1ee99df contains an inverted comparison vulnerability in the ieee80211_michael_mic_failure() function within sys/net80211/ieee80211_crypto_tkip.c that allows unauthenticated attackers within RF range to trigger denial of service by sending two malformed TKIP frames separated by more than 60 seconds. Attackers can exploit the reversed TKIP MIC failure countermeasure window check to deauthenticate all associated TKIP stations and block reassociation for up to 90 seconds, while within-window MIC failures that should engage countermeasures are silently discarded, leaving key-recovery attempts undetected.
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
不充分的比较
Vulnerability Title
OpenBSD 处理逻辑错误漏洞
Vulnerability Description
OpenBSD是加拿大OpenBSD基金会开源的一套跨平台的、基于BSD的类UNIX操作系统。 OpenBSD 1ee99df之前版本存在处理逻辑错误漏洞,该漏洞源于sys/net80211/ieee80211_crypto_tkip.c文件中的ieee80211_michael_mic_failure()函数存在比较逻辑反转问题,可能导致射频范围内的未认证攻击者发送两个相隔超过60秒的畸形TKIP帧触发拒绝服务,使所有关联的TKIP站点解除认证并阻止重新关联最长90秒。
CVSS Information
N/A
Vulnerability Type
N/A