Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2019-13272

Disclosure Date: July 17, 2019
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • canonical,
  • debian,
  • fedoraproject,
  • linux,
  • netapp,
  • redhat

Products

  • active iq unified manager -,
  • aff a700s firmware -,
  • debian linux 10.0,
  • debian linux 8.0,
  • debian linux 9.0,
  • e-series performance analyzer -,
  • e-series santricity os controller,
  • enterprise linux 7.0,
  • enterprise linux 8.0,
  • enterprise linux for real time 8,
  • fedora 29,
  • h410c firmware -,
  • h610s firmware -,
  • hci compute node -,
  • hci management node -,
  • linux kernel,
  • service processor -,
  • solidfire -,
  • steelstore cloud integrated storage -,
  • ubuntu linux 16.04,
  • ubuntu linux 18.04,
  • ubuntu linux 19.04

References

Advisory

Additional Info

Technical Analysis