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The auth_parse_options function in auth-options.c in sshd in OpenSSH before 5.7 provides debug messages containing authorized_keys command options, which allows remote authenticated users to obtain potentially sensitive information by reading these messages, as demonstrated by the shared user account required by Gitolite. NOTE: this can cross privilege boundaries because a user account may intentionally have no shell or filesystem access, and therefore may have no supported way to read an authorized_keys file in its own home directory.

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OpenSSH 信任管理问题漏洞

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 5.7之前版本的sshd的auth-options.c的auth_parse_options函数中存在信任管理问题漏洞，该漏洞源于其提供包含authorized_keys命令选项的调试信息。远程认证用户可利用该漏洞通过读取这些信息获取潜在的敏感信息。

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