[Forgot Password]
Login  Register Subscribe

30389

 
 

423868

 
 

244411

 
 

909

 
 

193363

 
 

277

Paid content will be excluded from the download.


Download | Alert*
CVE
view JSON

CVE-2019-13272Date: (C)2019-07-18   (M)2024-03-26


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
https://seclists.org/bugtraq/2019/Jul/30
https://seclists.org/bugtraq/2019/Jul/33
DSA-4484
FEDORA-2019-a95015e60f
RHSA-2019:2405
RHSA-2019:2411
RHSA-2019:2809
USN-4093-1
USN-4094-1
USN-4095-1
USN-4117-1
USN-4118-1
https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html
http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-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-PTRACE_TRACEME-Local-Root.html
http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-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
https://bugzilla.redhat.com/show_bug.cgi?id=1730895
https://bugzilla.suse.com/show_bug.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://security.netapp.com/advisory/ntap-20190806-0001/
https://support.f5.com/csp/article/K91025336
https://support.f5.com/csp/article/K91025336?utm_source=f5support&%3Butm_medium=RSS

CPE    5
cpe:/o:debian:debian_linux:9.0
cpe:/o:linux:linux_kernel
cpe:/o:debian:debian_linux:8.0
cpe:/o:canonical:ubuntu_linux:18.04::~~lts~~~
...
CWE    1
CWE-269
OVAL    29
oval:org.secpod.oval:def:89003220
oval:org.secpod.oval:def:116863
oval:org.secpod.oval:def:89003133
oval:org.secpod.oval:def:89003372
...

© SecPod Technologies