Authentication Bypass when using using older password hashes

Cacti provides an operational monitoring and fault management framework. Prior to version 1.2.27, Cacti calls `compat_password_hash` when users set their password. `compat_password_hash` use `password_hash` if there is it, else use `md5`. When verifying password, it calls `compat_password_verify`. In `compat_password_verify`, `password_verify` is called if there is it, else use `md5`. `password_verify` and `password_hash` are supported on PHP < 5.5.0, following PHP manual. The vulnerability is in `compat_password_verify`. Md5-hashed user input is compared with correct password in database by `$md5 == $hash`. It is a loose comparison, not `===`. It is a type juggling vulnerability. Version 1.2.27 contains a patch for the issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

认证机制不恰当

Cacti 安全漏洞

Cacti是Cacti团队的一套开源的网络流量监测和分析工具。该工具通过snmpget来获取数据，使用RRDtool绘画图形进行分析，并提供数据和用户管理功能。 Cacti 1.2.27之前版本存在安全漏洞，该漏洞源于存在跨站脚本漏洞。

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