Vulnerability Name:

CVE-2021-3897 (CCN-215257)

Assigned:2021-12-14
Published:2021-12-14
Updated:2022-08-09
Summary:An authentication bypass vulnerability was discovered in an internal service of the Lenovo Fan Power Controller2 (FPC2) and Lenovo System Management Module (SMM) firmware during an that could allow an unauthenticated attacker to execute commands on the SMM and FPC2. SMM2 is not affected.
CVSS v3 Severity:9.8 Critical (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 (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
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:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
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:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-3897

Source: XF
Type: UNKNOWN
lenovo-cve20213897-cmd-exec(215257)

Source: CCN
Type: Lenovo Security Advisory: LEN-72615
Authentication Bypass Vulnerabilities in FPC2 and SMM Firmware

Source: CONFIRM
Type: Vendor Advisory
N/A

Vulnerable Configuration:Configuration 1:
  • cpe:/o:lenovo:nextscale_n1200_enclosure_firmware:*:*:*:*:*:*:*:* (Version < fhet50b-2.90)
  • AND
  • cpe:/h:lenovo:nextscale_n1200_enclosure:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:lenovo:thinkagile_hx_enclosure_certified_node_firmware:*:*:*:*:*:*:*:* (Version < tesm28b-1.21)
  • AND
  • cpe:/h:lenovo:thinkagile_hx_enclosure_certified_node:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:lenovo:thinkagile_vx_enclosure_firmware:*:*:*:*:*:*:*:* (Version < tesm28b-1.21)
  • AND
  • cpe:/h:lenovo:thinkagile_vx_enclosure:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:lenovo:thinksystem_d2_enclosure_firmware:*:*:*:*:*:*:*:* (Version < tesm28b-1.21)
  • AND
  • cpe:/h:lenovo:thinksystem_d2_enclosure:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:ibm:nextscale_fan_power_controller_firmware:*:*:*:*:*:*:*:* (Version < 44a-3.70)
  • AND
  • cpe:/h:ibm:nextscale_fan_power_controller:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    lenovo nextscale n1200 enclosure firmware *
    lenovo nextscale n1200 enclosure -
    lenovo thinkagile hx enclosure certified node firmware *
    lenovo thinkagile hx enclosure certified node -
    lenovo thinkagile vx enclosure firmware *
    lenovo thinkagile vx enclosure -
    lenovo thinksystem d2 enclosure firmware *
    lenovo thinksystem d2 enclosure -
    ibm nextscale fan power controller firmware *
    ibm nextscale fan power controller -