CVE-2017-3765

In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as "HP Backdoor" was discovered during a Lenovo security audit in the serial console, Telnet, SSH, and Web interfaces. This bypass mechanism can be accessed when performing local authentication under specific circumstances. If exploited, admin-level access to the switch is granted.

CVSS v3.0 7.0 HIGH
CVSS v2.0 6.2 MEDIUM

7.0^/10

CVSS v3.0 : HIGH

V3 Legend

Vector : AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.2^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 1.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity HIGH

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://support.lenovo.com/us/en/product_security/LEN-16095	Mitigation Patch Vendor Advisory
http://www.securitytracker.com/id/1040296	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:lenovo:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g7052:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8124e:-:::::::*
	cpe:2.3:h:lenovo:flex_system_fabric_en4093r_10gb_scalable_switch:-:::::::*
	cpe:2.3:h:lenovo:flex_system_fabric_si4093_10gb_system_interconnect_module:-:::::::*
	cpe:2.3:h:lenovo:flex_system_si4091_system_interconnect_module:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g7028:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8264cs:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8272:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8296:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8332:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8052:-:::::::*
	cpe:2.3:h:lenovo:rackswitch_g8264:-:::::::*

Configuration 2 (hide)

AND

cpe:2.3:o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:ibm:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8264cs:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8264t:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8124:-:::::::*
	cpe:2.3:h:ibm:bladecenter_layer_2\/3_copper_ethernet_switch_module:-:::::::*
	cpe:2.3:h:ibm:bladecenter_1\:10g_uplink_ethernet_switch_module:-:::::::*
	cpe:2.3:h:ibm:flex_system_en2092_1gb_ethernet_scalable_switch:-:::::::*
	cpe:2.3:h:ibm:1g_l2-7_slb_switch_for_bladecenter:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8264:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8052:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8332:-:::::::*
	cpe:2.3:h:ibm:flex_system_fabric_en4093\/en4093r_10gb_scalable_switch:-:::::::*
	cpe:2.3:h:ibm:bladecenter_virtual_fabric_10gb_switch_module:-:::::::*
	cpe:2.3:h:ibm:flex_system_fabric_si4093_10gb_system_interconnect_module:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8124e:-:::::::*
	cpe:2.3:h:ibm:rackswitch_g8316:-:::::::*

Information

Published : 2018-01-10 10:29

Updated : 2018-02-06 06:12

NVD link : CVE-2017-3765

Mitre link : CVE-2017-3765

JSON object : View

CWE

CWE-287

Improper Authentication

Products Affected

lenovo

flex_system_fabric_cn4093_10gb_converged_scalable_switch
flex_system_fabric_en4093r_10gb_scalable_switch
rackswitch_g8264
rackswitch_g8332
flex_system_si4091_system_interconnect_module
rackswitch_g8124e
flex_system_fabric_si4093_10gb_system_interconnect_module
rackswitch_g8264cs
rackswitch_g8052
rackswitch_g7052
rackswitch_g8272
rackswitch_g7028
enterprise_network_operating_system
rackswitch_g8296

ibm

1g_l2-7_slb_switch_for_bladecenter
bladecenter_virtual_fabric_10gb_switch_module
rackswitch_g8264cs
flex_system_fabric_cn4093_10gb_converged_scalable_switch
bladecenter_1\
flex_system_fabric_en4093\/en4093r_10gb_scalable_switch
rackswitch_g8052
rackswitch_g8264t
flex_system_fabric_si4093_10gb_system_interconnect_module
rackswitch_g8264
rackswitch_g8124e
bladecenter_layer_2\/3_copper_ethernet_switch_module
flex_system_en2092_1gb_ethernet_scalable_switch
rackswitch_g8332
rackswitch_g8124
rackswitch_g8316

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://support.lenovo.com/us/en/product_security/LEN-16095", "name": "https://support.lenovo.com/us/en/product_security/LEN-16095", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.securitytracker.com/id/1040296", "name": "1040296", "tags": ["Third Party Advisory"], "refsource": "SECTRACK"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In Enterprise Networking Operating System (ENOS) in Lenovo and IBM RackSwitch and BladeCenter products, an authentication bypass known as \"HP Backdoor\" was discovered during a Lenovo security audit in the serial console, Telnet, SSH, and Web interfaces. This bypass mechanism can be accessed when performing local authentication under specific circumstances. If exploited, admin-level access to the switch is granted."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-287"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-3765", "ASSIGNER": "psirt@lenovo.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:H/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "HIGH", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "severity": "MEDIUM", "impactScore": 10.0, "obtainAllPrivilege": true, "exploitabilityScore": 1.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}}, "publishedDate": "2018-01-10T18:29Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "8.4.6.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:lenovo:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g7052:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8124e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:flex_system_fabric_en4093r_10gb_scalable_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:flex_system_si4091_system_interconnect_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g7028:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8264cs:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8272:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8296:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8332:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8052:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:lenovo:rackswitch_g8264:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}, {"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "8.4.6.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:h:ibm:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8264cs:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8264t:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8124:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:bladecenter_layer_2\\/3_copper_ethernet_switch_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:bladecenter_1\\:10g_uplink_ethernet_switch_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:flex_system_en2092_1gb_ethernet_scalable_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:1g_l2-7_slb_switch_for_bladecenter:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8264:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8052:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8332:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:flex_system_fabric_en4093\\/en4093r_10gb_scalable_switch:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:bladecenter_virtual_fabric_10gb_switch_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8124e:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:h:ibm:rackswitch_g8316:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-02-06T14:12Z"}

7.0 /10