Vulnerability CVE-2017-3765 - CERT Civis.Net

Vulnerability Name:

CVE-2017-3765 (CCN-137464)

Assigned:

2016-12-16

Published:

2018-01-09

Updated:

2018-02-06

Summary:

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 Severity:

7.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): High Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

6.2 Medium (CVSS v2 Vector: AV:L/AC:H/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): High Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2017-3765

Source: SECTRACK
Type: Third Party Advisory
1040296

Source: XF
Type: UNKNOWN
lenovo-ibm-cve20173765-sec-bypass(137464)

Source: CCN
Type: Lenovo Security Advisory: LEN-16095
Enterprise Networking Operating System (ENOS) Authentication Bypass in Lenovo and IBM RackSwitch and BladeCenter Products

Source: CONFIRM
Type: Mitigation, Patch, Vendor Advisory
https://support.lenovo.com/us/en/product_security/LEN-16095

Source: CCN
Type: IBM Web site
IBM

Vulnerable Configuration:

Configuration 1:

cpe:/o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:* (Version < 8.4.6.0)

AND

cpe:/h:lenovo:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_fabric_en4093r_10gb_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_si4091_system_interconnect_module:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g7028:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g7052:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8052:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8124e:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8264:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8264cs:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8272:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8296:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8332:-:*:*:*:*:*:*:*

Configuration 2:

cpe:/o:lenovo:enterprise_network_operating_system:*:*:*:*:*:*:*:* (Version < 8.4.6.0)

AND

cpe:/h:ibm:1g_l2-7_slb_switch_for_bladecenter:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_1:10g_uplink_ethernet_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_layer_2/3_copper_ethernet_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_virtual_fabric_10gb_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:flex_system_en2092_1gb_ethernet_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:flex_system_fabric_en4093/en4093r_10gb_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8052:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8124:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8124e:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8264:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8264cs:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8264t:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8316:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8332:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/h:ibm:rackswitch_g8264:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8316:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_fabric_cn4093_10gb_converged_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_fabric_en4093r_10gb_scalable_switch:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8052:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8264:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8264cs:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8296:-:*:*:*:*:*:*:*

OR cpe:/h:lenovo:rackswitch_g8332:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:flex_system_fabric_si4093_10gb_system_interconnect_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:1g_l2-7_slb_switch_for_bladecenter:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_virtual_fabric_10gb_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_1:10g_uplink_ethernet_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:bladecenter_layer_2/3_copper_ethernet_switch_module:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8264:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8052:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8332:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8124e:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8264t:-:*:*:*:*:*:*:*

OR cpe:/h:ibm:rackswitch_g8124:-:*:*:*:*:*:*:*

Denotes that component is vulnerable