正文

titanhq spamtitan 特权管理不恰当

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CVE编号

CVE-2020-24046

利用情况

暂无

补丁情况

N/A

披露时间

2020-09-18
漏洞描述
A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restricted shell, allowing execution of a small number of tools of the operating system. This restricted shell can be bypassed after changing the properties of the user admin in the operating system file /etc/passwd. This file cannot be accessed though the restricted shell, but it can be modified by abusing the Backup/Import Backup functionality of the web interface. An authenticated attacker would be able to obtain the file /var/tmp/admin.passwd after executing a Backup operation. This file can be manually modified to change the GUID of the user to 0 (root) and change the restricted shell to a normal shell /bin/sh. After the modification is done, the file can be recompressed to a .tar.bz file and imported again via the Import Backup functionality. The properties of the admin user will be overwritten and a root shell will be granted to the user upon the next successful login.
解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。
参考链接
https://github.com/felmoltor
https://sensepost.com/blog/2020/clash-of-the-spamtitan/
https://twitter.com/felmoltor
https://www.titanhq.com
受影响软件情况
# 类型 厂商 产品 版本 影响面
1
运行在以下环境
应用 titanhq spamtitan 7.07 -
CVSS3评分 7.2
  • 攻击路径 网络
  • 攻击复杂度 低
  • 权限要求 高
  • 影响范围 未更改
  • 用户交互 无
  • 可用性 高
  • 保密性 高
  • 完整性 高
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CWE-ID 漏洞类型 CWE-269 特权管理不恰当