Description
All versions of runc <=1.1.11, as used by containerization technologies such as Docker engine, and Kubernetes are vulnerable to an arbitrary file write. Due to a file descriptor leak it is possible to mount the host file system with the permissions of runc (typically root).
Successfully tested on Ubuntu 22.04 with runc 1.1.7-0ubuntu1~22.04.1 and runc 1.1.11 using Docker build. Successfully tested on Debian 12.4.0 with runc 1.1.11 using Docker build. Successfully tested on Arch Linux 12/1/2024 with runc 1.1.10-1 using Docker build.
Module options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/linux/local/runc/cwd_priv_escmsf undefined(cwd_priv_esc) > show actions ...actions...msf undefined(cwd_priv_esc) > set ACTION < action-name >msf undefined(cwd_priv_esc) > show options ...show and set options...msf undefined(cwd_priv_esc) > runPrioritise with Active Threat Intelligence
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