关联漏洞
标题：
below 安全漏洞
(CVE-2025-27591)
描述：below是Meta Incubator开源的一个现代 Linux 系统的资源监视器。 below v0.9.0之前版本存在安全漏洞，该漏洞源于创建了全局可写目录，可能导致通过符号链接攻击提升到root权限。
描述
CVE-2025-27591
介绍
# CVE-2025-27591 - Privilege Escalation via `below`
This repository contains an exploit for **CVE-2025-27591**, a privilege escalation vulnerability in the Linux monitoring tool **Below**.
## 🛠️ Vulnerability Details
- **CVE**: CVE-2025-27591
- **CVSS Score**: 7.8 (High)
- **Affected Tool**: [`below`](https://github.com/facebookincubator/below) (prior to `v0.9.0`)
- **Vulnerability**: Below creates world-writable directories and log files (`/var/log/below/error_root.log`) as root, allowing symlink attacks by unprivileged users.
- **Discovered**: January 2025
- **Published**: March 12, 2025
- **Source**: [SecurityOnline](https://securityonline.org/), [OpenWall](https://www.openwall.com/)
## 💥 Exploit Summary
This exploit allows a local user to escalate privileges to root by:
1. Symlinking `/var/log/below/error_root.log` to `/etc/passwd`
2. Triggering `below` to write to the symlink
3. Injecting a malicious root user into `/etc/passwd`
## ⚙️ Requirements
- `below` is available via `sudo`, e.g.:
```bash
sudo -l
(ALL : ALL) NOPASSWD: /usr/bin/below *
文件快照
[4.0K] /data/pocs/83334348397df5a843d2830374cda7ac8efe8f0b
├── [1.3K] CVE-2025-27591.sh
├── [ 34K] LICENSE
└── [1.1K] README.md
0 directories, 3 files
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