Executive Summary

Informations
Name CVE-2019-13272 First vendor Publication 2019-07-17
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13272

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-269 Improper Privilege Management

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 1
Application 1
Application 18
Application 1
Application 1
Application 1
Application 1
Hardware 1
Os 3
Os 3
Os 1
Os 3325
Os 2
Os 1

Metasploit Database

id Description
2019-07-04 Linux Polkit pkexec helper PTRACE_TRACEME local root exploit

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://support.f5.com/csp/article/K91025336?utm_source=f5support&amp%3Bu...
Source Url
BUGTRAQ https://seclists.org/bugtraq/2019/Jul/30
https://seclists.org/bugtraq/2019/Jul/33
CONFIRM https://bugzilla.redhat.com/show_bug.cgi?id=1730895
https://bugzilla.suse.com/show_bug.cgi?id=1140671
https://security.netapp.com/advisory/ntap-20190806-0001/
https://support.f5.com/csp/article/K91025336
DEBIAN https://www.debian.org/security/2019/dsa-4484
MISC http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permi...
http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slack...
http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice...
http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE...
http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html
http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME...
https://bugs.chromium.org/p/project-zero/issues/detail?id=1903
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=69...
https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c...
MLIST https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html
REDHAT https://access.redhat.com/errata/RHSA-2019:2405
https://access.redhat.com/errata/RHSA-2019:2411
https://access.redhat.com/errata/RHSA-2019:2809
UBUNTU https://usn.ubuntu.com/4093-1/
https://usn.ubuntu.com/4094-1/
https://usn.ubuntu.com/4095-1/
https://usn.ubuntu.com/4117-1/
https://usn.ubuntu.com/4118-1/

Alert History

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  • First insertion