Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

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 obtai...
Back to all
CVE

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 obtai...

In the Linux kernel before 5.1.17, ptracelink 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 PTRACETRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.8
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?fieldcve=CVE-2019-13272, http://packetstormsecurity.com/files/153663/Linux-PTRACETRACEME-Broken-Permission-Object-Lifetime-Handling.html, http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html, http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html, http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACETRACEME-Local-Root.html, http://packetstormsecurity.com/files/156929/Linux-PTRACETRACEME-Local-Root.html, http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACETRACEME-pkexec-Local-Privilege-Escalation.html, https://access.redhat.com/errata/RHSA-2019:2405, https://access.redhat.com/errata/RHSA-2019:2411, https://access.redhat.com/errata/RHSA-2019:2809, https://bugs.chromium.org/p/project-zero/issues/detail?id=1903, https://bugzilla.suse.com/showbug.cgi?id=1140671, 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=6994eefb0053799d2e07cd140df6c2ea106c41ee, https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html, https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH/, https://seclists.org/bugtraq/2019/Jul/30, https://seclists.org/bugtraq/2019/Jul/33, https://security.netapp.com/advisory/ntap-20190806-0001/, https://support.f5.com/csp/article/K91025336, https://support.f5.com/csp/article/K91025336?utmsource=f5support&amp%3Butmmedium=RSS, 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/, https://www.debian.org/security/2019/dsa-4484, https://bugs.chromium.org/p/project-zero/issues/detail?id=1903, https://bugzilla.redhat.com/showbug.cgi?id=1730895, https://bugzilla.suse.com/showbug.cgi?id=1140671, https://seclists.org/bugtraq/2019/Jul/30, https://seclists.org/bugtraq/2019/Jul/33, https://bugs.chromium.org/p/project-zero/issues/detail?id=1903, https://bugzilla.redhat.com/showbug.cgi?id=1730895, https://bugzilla.suse.com/showbug.cgi?id=1140671, 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=6994eefb0053799d2e07cd140df6c2ea106c41ee, https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee, https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html, https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html, https://seclists.org/bugtraq/2019/Jul/30, https://seclists.org/bugtraq/2019/Jul/33, http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html, http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACETRACEME-Local-Root.html, http://packetstormsecurity.com/files/156929/Linux-PTRACETRACEME-Local-Root.html, http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html, https://bugs.chromium.org/p/project-zero/issues/detail?id=1903

Severity

7.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.8
EPSS Probability
0.81252%
EPSS Percentile
0.99136%
Introduced Version
0
Fix Available
69973b830859bc6529a7a0468ba0d80ee5117826,6994eefb0053799d2e07cd140df6c2ea106c41ee,0:4.18.0-80.7.2.el8_0,0:4.18.0-80.7.2.rt9.154.el8_0,4.19.37-5+deb10u1,4.9.168-1+deb9u4,4.19.37-6,0:4.15.0-58.64,0:4.15.0-1043.46,0:4.15.0-1060.66,0:4.15.0-1047.49,0:5.0.0-25.26~18.04.1,0:4.15.0-1040.42,0:5.0.0-1014.14~18.04.1,0:4.15.0-1042.42,0:4.15.0-1050.57,0:4.15.0-1021.23,0:5.0.0-1018.20,0:4.14.35-1902.4.8.el7uek,0:4.14.133-88.105.amzn1,0:4.14.133-113.105.amzn2

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading