Linux — 3.13.0-32-generic Exploit
char opts[256]; snprintf(opts, sizeof(opts), "lowerdir=%s,upperdir=%s,workdir=%s", lower, upper, work); mount("overlay", merged, "overlayfs", 0, opts); Now, inside /tmp/merged , the file file appears. If you edit it, the changes actually go to /tmp/upper/file . This is where the exploit deviates from normal behavior. The attacker creates a second thread. Thread A tries to rename the file from the overlay to a protected location (e.g., /etc/cron.d/exploit ). Thread B constantly churns the filesystem by creating and deleting files in the upper directory.
Posted by: Security Research Team Date: October 26, 2023 (Updated) Difficulty: Advanced Introduction If you have been in the cybersecurity space for a while, you have likely stumbled upon a vulnerability report or an exploit script mentioning a specific kernel string: linux 3.13.0-32-generic . linux 3.13.0-32-generic exploit
For penetration testers: Enjoy the easy win, but document it thoroughly. A root shell via a 9-year-old bug is a clear sign of a broken patch management policy. The attacker creates a second thread
![The Night Manager S02 [SERIE TV - 2160PO - ATMOS 7.1]](https://image.over-blog.com/mUEGPcFDkQMqFtNv5K3uUEZwnrk=/400x260/smart/filters:no_upscale()/image%2F0517715%2F20260125%2Fob_2fbbd2_a6abc8663d73aa363cb454e662bb9060caee41.jpg)
![Les Gouttes de Dieu S02 [SERIE TV - 2160P - ATMOS 5.1]](https://image.over-blog.com/rLK4Rk31qwfZNUiggdLeM_fRdv8=/400x260/smart/filters:no_upscale()/image%2F0517715%2F20260125%2Fob_5a9259_sans-titre.png)
![A Knight of the Seven Kingdoms S01 [SERIE TV - 2160P - ATMOS 7.1]](https://image.over-blog.com/y7EW5R-uC0sh3K649tVmImKJFR4=/400x260/smart/filters:no_upscale()/image%2F0517715%2F20260125%2Fob_2f7d1e_a-knight-of-the-seven-kingdoms.png)
/image%2F0517715%2F20251227%2Fob_055f06_5f20c639-0246-4b32-bee0-d5eeb8320ddd.png)
