漏洞信息
尽管我们使用了先进的大模型技术,但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性,但请您根据实际情况进行核实和判断。
Vulnerability Title
pam_usb: TOCTOU race condition in pad directory creation allows symlink substitution
Vulnerability Description
pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pam_usb uses a check-then-act pattern: it calls lstat() to test for existence and then calls mkdir() separately to create the directory. A local attacker can win the race between these calls by replacing the target path with a symlink to a directory they control. If successful, one-time pad files may be written to an attacker-controlled location, potentially exposing future pad values before use or disrupting authentication. This issue has been fixed in version 0.9.2.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Vulnerability Title
McDope pam_usb 竞争条件问题漏洞
Vulnerability Description
mcdope pam_usb是mcdope的认证模块。 McDope pam_usb 0.9.2之前版本存在竞争条件问题漏洞,该漏洞源于在设备和用户一次性密码目录创建过程中存在符号链接竞争条件,使用检查后执行模式,可能导致本地攻击者利用符号链接替换目标路径,将一次性密码文件写入攻击者控制的位置,从而泄露未来密码值或破坏身份验证。
CVSS Information
N/A
Vulnerability Type
N/A