CVE-2019-13272
HIGH7.8⚠ KEVEPSS 80.4%linux - security update
發布日:2019/7/17修改日:2026/3/9加入 CISA KEV 日:2021/12/10
描述
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.
受影響套件(3)
- Debian/linuxfrom 0, < 4.19.37-6
- Debian/linuxfrom 0, < 4.9.168-1+deb9u4
- Debian/linux-4.9from 0, < 4.9.168-1+deb9u4~deb8u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |