CVE-2019-13272
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
- Linux Linux Kernel
- < 3.16.71, 4.2, 4.4.185, 4.9, 4.9.185, 4.14.133, 4.19.58, 5.1.17
- Fix
- Available
- CVSS 3.1
- 7.8 HIGH
- EPSS
- 52.2% (99th percentile)
- NVD status
- Analyzed
- Published
- 2019-07-17
41 known exploits for CVE-2019-13272
Proof-of-concept code and exploit modules indexed by Sploitus