CVE-2017-15906

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

CVSS v3.0 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://www.openssh.com/txt/release-7.6	Release Notes Vendor Advisory
https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19	Third Party Advisory
https://security.gentoo.org/glsa/201801-05	Third Party Advisory
http://www.securityfocus.com/bid/101552	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0980	Third Party Advisory
https://security.netapp.com/advisory/ntap-20180423-0004/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html	Mailing List Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2020.html	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Configurations

Configuration 1 (hide)

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:a:oracle:sun_zfs_storage_appliance_kit:8.8.6:*:*:*:*:*:*:*

Configuration 3 (hide)

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

Configuration 4 (hide)

OR	cpe:2.3:a:netapp:cloud_backup:-:::::::*
	cpe:2.3:a:netapp:data_ontap_edge:-:::::::*
	cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:::::::*
	cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*
	cpe:2.3:a:netapp:solidfire:-:::::::*
	cpe:2.3:a:netapp:hci_management_node:-:::::::*
	cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::
	cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:::::::*
	cpe:2.3:a:netapp:virtual_storage_console::::::vmware_vsphere::*
	cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap::::::vmware_vsphere::*
	cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap:9.6:::::vmware_vsphere::
	cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap::::::::
	cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap::::::::
	cpe:2.3:a:netapp:virtual_storage_console:9.6:::::vmware_vsphere::

Configuration 5 (hide)

AND

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

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

Configuration 6 (hide)

OR	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:7.6:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:::::::*
	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:::::::*
	cpe:2.3:o:redhat:enterprise_linux_eus:7.7:::::::*

Information

Published : 2017-10-25 20:29

Updated : 2022-12-13 04:15

NVD link : CVE-2017-15906

Mitre link : CVE-2017-15906

JSON object : View

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

Products Affected

netapp

cloud_backup
oncommand_unified_manager_core_package
data_ontap_edge
cn1610
active_iq_unified_manager
steelstore_cloud_integrated_storage
vasa_provider_for_clustered_data_ontap
clustered_data_ontap
solidfire
cn1610_firmware
virtual_storage_console
storage_replication_adapter_for_clustered_data_ontap
hci_management_node

oracle

sun_zfs_storage_appliance_kit

debian

debian_linux

redhat

enterprise_linux_server_aus
enterprise_linux_workstation
enterprise_linux_desktop
enterprise_linux_server_tus
enterprise_linux_server
enterprise_linux_eus

openbsd

openssh

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"https://security.netapp.com/advisory/ntap-20180423-0004/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html", "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://www.oracle.com/security-alerts/cpujan2020.html", "name": "https://www.oracle.com/security-alerts/cpujan2020.html", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf", "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf", "tags": [], "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-732"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-15906", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}}, "publishedDate": "2017-10-26T03:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "7.6"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:oracle:sun_zfs_storage_appliance_kit:8.8.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:oncommand_unified_manager_core_package:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:netapp:virtual_storage_console:*:*:*:*:*:vmware_vsphere:*:*", "cpe_name": [], "vulnerable": true, "versionStartIncluding": "9.7"}, {"cpe23Uri": "cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap:*:*:*:*:*:vmware_vsphere:*:*", "cpe_name": [], "vulnerable": true, "versionStartIncluding": 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"operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_eus:7.6:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_eus:7.7:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-12-13T12:15Z"}

5.3 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

JSON object

Attach tags to CVE-2017-15906

5.3^/10

5.0^/10

Attach tags to `CVE-2017-15906`