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.

CVSS v3 4.7 MEDIUM
CVSS v2.0 1.9 LOW

4.7^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

1.9^/10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:L/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 3.4 / Impact : 2.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
http://www.securityfocus.com/bid/89937	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901	Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20190517-0005/	Third Party Advisory
http://www.securityfocus.com/bid/89937	Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901	Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20190517-0005/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:a:netapp:active_iq_unified_manager_for_vmware_vsphere::::::::
	cpe:2.3:a:netapp:hci_management_node:-:::::::*
	cpe:2.3:a:netapp:snapprotect:-:::::::*
	cpe:2.3:a:netapp:solidfire:-:::::::*
	cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere::::::::
	cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap::::::::
	cpe:2.3:a:netapp:virtual_storage_console_for_vmware_vsphere::::::::

Configuration 4 (hide)

AND

cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:*

History

21 Nov 2024, 04:42

Type	Values Removed	Values Added
References	~~() http://www.securityfocus.com/bid/89937 - Third Party Advisory, VDB Entry~~	() http://www.securityfocus.com/bid/89937 - Third Party Advisory, VDB Entry
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901 - Issue Tracking, Patch, Third Party Advisory~~	() https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901 - Issue Tracking, Patch, Third Party Advisory
References	~~() https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html - Mailing List, Third Party Advisory~~	() https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html - Mailing List, Third Party Advisory
References	~~() https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html - Mailing List, Third Party Advisory~~	() https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html - Mailing List, Third Party Advisory
References	~~() https://security.netapp.com/advisory/ntap-20190517-0005/ - Third Party Advisory~~	() https://security.netapp.com/advisory/ntap-20190517-0005/ - Third Party Advisory

Information

Published : 2019-04-22 16:29

Updated : 2024-11-21 04:42

NVD link : CVE-2019-3901

Mitre link : CVE-2019-3901

CVE.ORG link : CVE-2019-3901

JSON object : View

Products Affected

debian

debian_linux

netapp

hci_management_node
cn1610
cn1610_firmware
snapprotect
active_iq_unified_manager_for_vmware_vsphere
storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere
virtual_storage_console_for_vmware_vsphere
vasa_provider_for_clustered_data_ontap
solidfire

linux

linux_kernel

CWE

CWE-667

Improper Locking

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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."}, {"lang": "es", "value": "Una condici\u00f3n de carrera en la funci\u00f3n perf_event_open() permite a los atacantes locales filtrar datos confidenciales desde los programas setuid. Como no se mantienen bloqueos relevantes (en particular, la funci\u00f3n cred_guard_mutex) durante la llamada ptrace_may_access(), es posible que la tarea de destino especificada realice un syscall execve() con la ejecuci\u00f3n setuid anterior a que perf_event_alloc() realmente se conecte, permitiendo que un atacante omita la comprobaci\u00f3n ptrace_may_access() y la llamada perf_event_exit_task(current) que se realiza en install_exec_creds() durante las llamadas privilegiadas execve(). Este problema afecta a las versiones del kernel versi\u00f3n anterior a 4.8."}], "lastModified": "2024-11-21T04:42:49.780", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "28EB12EC-3BC4-4DCC-9A6A-5F810F17E8FE", "versionEndExcluding": "4.8"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:netapp:active_iq_unified_manager_for_vmware_vsphere:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E263387-E95B-48CA-A043-11DD6B3DA6AF", "versionStartIncluding": "9.5"}, {"criteria": "cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A3C19813-E823-456A-B1CE-EC0684CE1953"}, {"criteria": "cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F74F467A-0C81-40D9-BA06-40FB8EF02C04"}, {"criteria": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737"}, {"criteria": "cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB55E2B2-4297-48DC-9FCD-B0BC9F9142E3", "versionStartIncluding": "7.2"}, {"criteria": "cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13270F58-E106-48CE-9933-E68AABBBFC21", "versionStartIncluding": "7.2"}, {"criteria": "cpe:2.3:a:netapp:virtual_storage_console_for_vmware_vsphere:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A2FEFEB-FD91-4E9A-8EEB-B460DF1CA19E", "versionStartIncluding": "7.2"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB30733E-68FC-49C4-86C0-7FEE75C366BF"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6361DAC6-600F-4B15-8797-D67F298F46FB"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "secalert@redhat.com"}

4.7 /10

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

1.9 /10

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

JSON object

Attach tags to CVE-2019-3901

4.7^/10

1.9^/10

Attach tags to `CVE-2019-3901`