Medium severity · published Jun 9, 2020
CVE-2020-8336
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash
6.8
CVSS
0.3%
EPSS
No
On KEV
Description
Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
Thinkpad E14 Firmware · Lenovo
before 2020-07-10 · source: NVD
TE
Thinkpad E15 Firmware · Lenovo
before 2020-07-10 · source: NVD
TE
Thinkpad E490 Firmware · Lenovo
before 2020-07-10 · source: NVD
TE
Thinkpad E490s Firmware · Lenovo
before 2020-07-10 · source: NVD
TE
Thinkpad E590 Firmware · Lenovo
before 2020-07-10 · source: NVD
TL
Thinkpad L13 1st Gen Firmware · Lenovo
before 2020-07-10 · source: NVD
TL
Thinkpad L1415 Gen 1 Firmware · Lenovo
before 2020-07-10 · source: NVD
TL
Thinkpad L390 Yoga Firmware · Lenovo
before 2020-07-10 · source: NVD
TL
Thinkpad L490 Firmware · Lenovo
before 2020-07-10 · source: NVD
TL
Thinkpad L590 Firmware · Lenovo
before 2020-07-10 · source: NVD
TP
Thinkpad P1 (20mx) Firmware · Lenovo
before n2eet47w · source: NVD
TP
Thinkpad P1 (20qx) Firmware · Lenovo
before n2oet44w · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8336
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8336
Vendor Advisory
https://support.lenovo.com/us/en/product_security/LEN-30042
More from Thinkpad E14 Firmware
6.8
CVE-2020-8320
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege
6.7
CVE-2022-48189
An SMM driver input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated privileges to execute arbitrary code
6.7
CVE-2023-2290
A potential vulnerability in the LenovoFlashDeviceInterface SMI handler may allow an attacker with local access and elevated privileges to execute arbitrary code