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Vulnerability Details : CVE-2019-3901

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
Publish Date : 2019-04-22 Last Update Date : 2020-12-04
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 667

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2020:1016: kernel security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20201016 unix
RHSA-2020:1070: kernel-rt security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20201070 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-3901

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
3 Application Netapp Active Iq Unified Manager For Vmware Vsphere * * * * Version Details Vulnerabilities
4 Application Netapp Hci Management Node - * * * Version Details Vulnerabilities
5 Application Netapp Snapprotect - * * * Version Details Vulnerabilities
6 Application Netapp Solidfire - * * * Version Details Vulnerabilities
7 Application Netapp Storage Replication Adapter For Clustered Data Ontap For Vmware Vsphere * * * * Version Details Vulnerabilities
8 Application Netapp Vasa Provider For Clustered Data Ontap * * * * Version Details Vulnerabilities
9 Application Netapp Virtual Storage Console For Vmware Vsphere * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Linux Linux Kernel 1
Netapp Active Iq Unified Manager For Vmware Vsphere 1
Netapp Hci Management Node 1
Netapp Snapprotect 1
Netapp Solidfire 1
Netapp Storage Replication Adapter For Clustered Data Ontap For Vmware Vsphere 1
Netapp Vasa Provider For Clustered Data Ontap 1
Netapp Virtual Storage Console For Vmware Vsphere 1

- References For CVE-2019-3901

https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
MLIST [debian-lts-announce] 20190528 [SECURITY] [DLA 1799-2] linux security update
https://security.netapp.com/advisory/ntap-20190517-0005/ CONFIRM
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
MLIST [debian-lts-announce] 20190528 [SECURITY] [DLA 1799-1] linux security update
http://www.securityfocus.com/bid/89937
BID 89937 Linux Kernel 'perf_event_open()' Function Local Information Disclosure Vulnerability Release Date:2019-04-24
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901 CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2019-3901

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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