CVE-2021-3452: Input Validation
First published: Fri Jul 16 2021(Updated: )
A potential vulnerability in the system shutdown SMI callback function in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.
Credit: psirt@lenovo.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Lenovo Bios | ||
| Lenovo Thinkpad 11e 3rd Gen | ||
| Lenovo Thinkpad 11e 4th Gen | ||
| Lenovo Thinkpad 11e 5th Gen | ||
| Lenovo Thinkpad 11e Yoga Gen 6 | ||
| Lenovo Thinkpad 13 Gen 2 | ||
| Lenovo Thinkpad E14 Gen 2 | ||
| Lenovo Thinkpad E15 Gen 2 | ||
| Lenovo Thinkpad L13 | ||
| Lenovo Thinkpad L13 Gen 2 | ||
| Lenovo Thinkpad L13 Yoga | ||
| Lenovo Thinkpad L13 Yogo Gen 2 | ||
| Lenovo Thinkpad L14 | ||
| Lenovo Thinkpad L14 Gen 2 | ||
| Lenovo Thinkpad L15 | ||
| Lenovo Thinkpad L15 Gen 2 | ||
| Lenovo Thinkpad L380 | ||
| Lenovo Thinkpad L380 Yoga | ||
| Lenovo Thinkpad L390 | ||
| Lenovo Thinkpad L390 Yoga | ||
| Lenovo ThinkPad T460 | ||
| Lenovo Thinkpad X12 Detachable Gen 1 | ||
| Lenovo Thinkpad X260 | ||
| Lenovo Thinkpad X380 Yoga | ||
| Lenovo Thinkpad Yoga 11e 3rd Gen | ||
| Lenovo Thinkpad Yoga 11e 4th Gen | ||
| Lenovo Thinkpad Yoga 370 | ||
| Lenovo Bios |
Remedy
Update system firmware to the version (or newer) indicated for your model in the Product Impact section of LEN-65529.
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Reference Links
Frequently Asked Questions
What is CVE-2021-3452?
CVE-2021-3452 is a potential vulnerability in the system shutdown SMI callback function in some ThinkPad models.
How can an attacker exploit CVE-2021-3452?
An attacker with local access and elevated privileges can exploit CVE-2021-3452 to execute arbitrary code.
Which Lenovo models are affected by CVE-2021-3452?
CVE-2021-3452 affects some ThinkPad models, such as Lenovo Thinkpad L13, Lenovo Thinkpad L380, Lenovo ThinkPad T460, and more.
What is the severity of CVE-2021-3452?
The severity of CVE-2021-3452 is medium, with a severity value of 6.7 out of 10.
How can I fix CVE-2021-3452?
To fix CVE-2021-3452, it is recommended to install the BIOS update provided by Lenovo.
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- vendor/lenovo
- canonical/lenovo bios
- canonical/lenovo thinkpad 11e 3rd gen
- canonical/lenovo thinkpad 11e 4th gen
- canonical/lenovo thinkpad 11e 5th gen
- canonical/lenovo thinkpad 11e yoga gen 6
- canonical/lenovo thinkpad 13 gen 2
- canonical/lenovo thinkpad e14 gen 2
- canonical/lenovo thinkpad e15 gen 2
- canonical/lenovo thinkpad l13
- canonical/lenovo thinkpad l13 gen 2
- canonical/lenovo thinkpad l13 yoga
- canonical/lenovo thinkpad l13 yogo gen 2
- canonical/lenovo thinkpad l14
- canonical/lenovo thinkpad l14 gen 2
- canonical/lenovo thinkpad l15
- canonical/lenovo thinkpad l15 gen 2
- canonical/lenovo thinkpad l380
- canonical/lenovo thinkpad l380 yoga
- canonical/lenovo thinkpad l390
- canonical/lenovo thinkpad l390 yoga
- canonical/lenovo thinkpad t460
- canonical/lenovo thinkpad x12 detachable gen 1
- canonical/lenovo thinkpad x260
- canonical/lenovo thinkpad x380 yoga
- canonical/lenovo thinkpad yoga 11e 3rd gen
- canonical/lenovo thinkpad yoga 11e 4th gen
- canonical/lenovo thinkpad yoga 370