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Red Hat: CVE-2019-13272: CVE-2019-13272 kernel: broken permission and object lifetime handling for PTRACE_TRACEME (Multiple Advisories)

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Red Hat: CVE-2019-13272: CVE-2019-13272 kernel: broken permission and object lifetime handling for PTRACE_TRACEME (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
07/17/2019
Created
08/09/2019
Added
08/08/2019
Modified
12/15/2023

Description

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.

Solution(s)

  • redhat-upgrade-bpftool
  • redhat-upgrade-bpftool-debuginfo
  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-abi-whitelists
  • redhat-upgrade-kernel-core
  • redhat-upgrade-kernel-cross-headers
  • redhat-upgrade-kernel-debug
  • redhat-upgrade-kernel-debug-core
  • redhat-upgrade-kernel-debug-debuginfo
  • redhat-upgrade-kernel-debug-devel
  • redhat-upgrade-kernel-debug-modules
  • redhat-upgrade-kernel-debug-modules-extra
  • redhat-upgrade-kernel-debuginfo
  • redhat-upgrade-kernel-debuginfo-common-s390x
  • redhat-upgrade-kernel-debuginfo-common-x86_64
  • redhat-upgrade-kernel-devel
  • redhat-upgrade-kernel-doc
  • redhat-upgrade-kernel-headers
  • redhat-upgrade-kernel-modules
  • redhat-upgrade-kernel-modules-extra
  • redhat-upgrade-kernel-rt
  • redhat-upgrade-kernel-rt-core
  • redhat-upgrade-kernel-rt-debug
  • redhat-upgrade-kernel-rt-debug-core
  • redhat-upgrade-kernel-rt-debug-debuginfo
  • redhat-upgrade-kernel-rt-debug-devel
  • redhat-upgrade-kernel-rt-debug-kvm
  • redhat-upgrade-kernel-rt-debug-kvm-debuginfo
  • redhat-upgrade-kernel-rt-debug-modules
  • redhat-upgrade-kernel-rt-debug-modules-extra
  • redhat-upgrade-kernel-rt-debuginfo
  • redhat-upgrade-kernel-rt-debuginfo-common-x86_64
  • redhat-upgrade-kernel-rt-devel
  • redhat-upgrade-kernel-rt-kvm
  • redhat-upgrade-kernel-rt-kvm-debuginfo
  • redhat-upgrade-kernel-rt-modules
  • redhat-upgrade-kernel-rt-modules-extra
  • redhat-upgrade-kernel-tools
  • redhat-upgrade-kernel-tools-debuginfo
  • redhat-upgrade-kernel-tools-libs
  • redhat-upgrade-kernel-tools-libs-devel
  • redhat-upgrade-kernel-zfcpdump
  • redhat-upgrade-kernel-zfcpdump-core
  • redhat-upgrade-kernel-zfcpdump-debuginfo
  • redhat-upgrade-kernel-zfcpdump-devel
  • redhat-upgrade-kernel-zfcpdump-modules
  • redhat-upgrade-kernel-zfcpdump-modules-extra
  • redhat-upgrade-perf
  • redhat-upgrade-perf-debuginfo
  • redhat-upgrade-python3-perf
  • redhat-upgrade-python3-perf-debuginfo

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