Vulnerability CVE-2018-17972
Published: 2018-10-03   Modified: 2018-10-04

Description:
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

Type:

CWE-269

 (Improper Privilege Management)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
6.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
None
None
Affected software
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux server tus 
Redhat -> Enterprise linux workstation 
Redhat -> Virtualization 
Linux -> Linux kernel 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
http://www.securityfocus.com/bid/105525
https://access.redhat.com/errata/RHSA-2019:0512
https://access.redhat.com/errata/RHSA-2019:0514
https://access.redhat.com/errata/RHSA-2019:0831
https://access.redhat.com/errata/RHSA-2019:2473
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2
https://usn.ubuntu.com/3821-1/
https://usn.ubuntu.com/3821-2/
https://usn.ubuntu.com/3832-1/
https://usn.ubuntu.com/3835-1/
https://usn.ubuntu.com/3871-1/
https://usn.ubuntu.com/3871-3/
https://usn.ubuntu.com/3871-4/
https://usn.ubuntu.com/3871-5/
https://usn.ubuntu.com/3880-1/
https://usn.ubuntu.com/3880-2/
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