CVE-2023-51767— OpenSSH 安全漏洞

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OpenSSH through 10.0, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states "we do not consider it to be the application's responsibility to defend against platform architectural weaknesses."

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OpenSSH 安全漏洞

OpenSSH（OpenBSD Secure Shell）是加拿大OpenBSD计划组的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 9.6及之前版本存在安全漏洞，该漏洞源于当使用常见类型的DRAM时，mm_answer_authpassword中已验证的整数值不能抵抗单个比特的翻转，导致攻击者可以绕过身份验证。

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