medium
6.5
CWE
295
Advisory Published
Updated

CVE-2021-21571

First published: Thu Jun 24 2021(Updated: )

Dell UEFI BIOS https stack leveraged by the Dell BIOSConnect feature and Dell HTTPS Boot feature contains an improper certificate validation vulnerability. A remote unauthenticated attacker may exploit this vulnerability using a person-in-the-middle attack which may lead to a denial of service and payload tampering.

Credit: security_alert@emc.com

Affected SoftwareAffected VersionHow to fix
Dell Alienware m15 R6 Firmware<1.3.3
Dell Alienware m15 R6 Firmware
Dell Chengming 3990<1.4.1
Dell Chengming 3977 Firmware
Dell Chengming 3991 Firmware<1.4.1
Dell Chengming 3991 Firmware
Dell G15 5510 Firmware<1.4.0
Dell G15 5510 Firmware
Dell G15 5511 Firmware<1.3.3
Dell G15 5511 Firmware
Dell G3 15 3500 firmware<1.9.0
Dell G3 15 3500
Dell G5 15 5500 Firmware<1.9.0
Dell G5 15 5500 Firmware
Dell G7 15 7500 Firmware<1.9.0
Dell G7 15 7500 Firmware
Dell G7 17 7700 Firmware<1.9.0
Dell G7 17 7700
Dell Inspiron 14 5418 Firmware<2.1.0_a06
Dell Inspiron 14 5418 Firmware
Dell Inspiron 15 5518 Firmware<2.1.0_a06
Dell Inspiron 15 5518 Firmware
Dell Inspiron 7510 Firmware<1.0.4
Dell Inspiron 15 7510 Firmware
Dell Inspiron 3501 Firmware<1.6.0
Dell Inspiron 3501 Firmware
Dell Inspiron 3880 Firmware<1.4.1
Dell Inspiron 3880 Firmware
Dell Inspiron 3881<1.4.1
Dell Inspiron 3881
Dell Inspiron 3891 Firmware<1.0.11
Dell Inspiron 3891
Dell Inspiron 5300 Firmware<1.7.1
Dell Inspiron 5300 Firmware
Dell Inspiron 5301 Firmware<1.8.1
Dell Inspiron 5301 Firmware
Dell Inspiron 13 5310 Firmware<2.1.0
Dell Inspiron 13 5310
Dell Inspiron 5400 2-in-1 Firmware<1.7.0
Dell Inspiron 5400 2-in-1 Firmware
Dell Inspiron 5400 AIO<1.4.0
Dell Inspiron 5400
Dell Inspiron 5401 AIO Firmware<1.7.2
Dell Inspiron 5401 AIO
Dell Inspiron 5401 AIO<1.4.0
Dell Inspiron 5401 All-in-One
Dell Inspiron 5402 Firmware<1.5.1
Dell Inspiron 5402
Dell Inspiron 5406 2-in-1 Firmware<1.5.1
Dell Inspiron 5406 2-in-1
Dell Inspiron 5408 Firmware<1.7.2
Dell Inspiron 5408 Firmware
Dell Inspiron 5409 Firmware<1.5.1
Dell Inspiron 5409 Firmware
Dell Inspiron 5410 Firmware<2.1.0
Dell Inspiron 14 5410 2-in-1
Dell Inspiron 5501 Firmware<1.7.2
Dell Inspiron 5501
Dell Inspiron 5502 Firmware<1.5.1
Dell Inspiron 5502 Firmware
Dell Inspiron 5508 Firmware<1.7.2
Dell Inspiron 5508 Firmware
Dell Inspiron 5509 Firmware<1.5.1
Dell Inspiron 5509
Dell Inspiron 7300 Firmware<1.8.1
Dell Inspiron 7300
Dell Inspiron 7300 Firmware<1.3.0
Dell Inspiron 7300
Dell Inspiron 7306 2-in-1 firmware<1.5.1
Dell Inspiron 7306 2-in-1 firmware
Dell Inspiron 7400 Firmware<1.8.1
Dell Inspiron 7400 Firmware
Dell Inspiron 7500 Firmware<1.8.0
Dell Inspiron 7500 Firmware
Dell Inspiron 7500 Firmware<1.3.0
Dell Inspiron 7500 2-in-1 Firmware
Dell Inspiron 7501 Firmware<1.8.0
Dell Inspiron 7501 Firmware
Dell Inspiron 7506 Firmware<1.5.1
Dell Inspiron 7506 Firmware
Dell Inspiron 16 7610 Firmware<1.0.4
Dell Inspiron 16 7610 Firmware
Dell Inspiron 7700 All-in-One Firmware<1.4.0
Dell Inspiron 7700
Dell Inspiron 7706 2-in-1 Firmware<1.5.1
Dell Inspiron 7706 2-in-1
Dell Latitude 3120 Firmware<1.1.0
Dell Latitude 3120 Firmware
Dell Latitude 3320 Firmware<1.4.0
Dell Latitude 3320 Firmware
Dell Latitude 3410 Firmware<1.9.0
Dell Latitude 3410
Dell Latitude 3420 Firmware<1.8.0
Dell Latitude 3420 Firmware
Dell Latitude 3510 Firmware<1.9.0
Dell Latitude 3510 Firmware
Dell Latitude 3520 Firmware<1.8.0
Dell Latitude 3520 Firmware
Dell Latitude 5310 Firmware<1.7.0
Dell Latitude 5310 Firmware
Dell Latitude 5310 2-in-1 Firmware<1.7.0
Dell Latitude 5310
Dell Latitude 5320 Firmware<1.7.1
Dell Latitude 5320 Firmware
Dell Latitude 5320 2-in-1 firmware<1.7.1
Dell Latitude 5320 2-in-1 firmware
Dell Latitude 5410 Firmware<1.6.0
Dell Latitude 5410 Firmware
Dell Latitude 5411 Firmware<1.6.0
Dell Latitude 5411 Firmware
Dell Latitude Rugged 5420 Firmware<1.8.0
Dell Latitude 5420 Firmware
Dell Latitude 5510 Firmware<1.6.0
Dell Latitude 5510 Firmware
Dell Latitude 5511 Firmware<1.6.0
Dell Latitude 5511 Firmware
Dell Latitude 5520 Firmware<1.7.1
Dell Latitude 5520 Firmware
Dell Latitude 5521 Firmware<1.3.0_a03
Dell Latitude 5521 Firmware
Dell Latitude 7210 2-in-1 Firmware<1.7.0
Dell Latitude 7210
Dell Latitude 7310 Firmware<1.7.0
Dell Latitude 7310 Firmware
Dell Latitude 7320 Detachable Firmware<1.7.1
Dell Latitude 7320 Firmware
Dell Latitude 7320 Detachable Firmware<1.4.0_a04
Dell Latitude 7320 Detachable Firmware
Dell Latitude 7410 Firmware<1.7.0
Dell Latitude 7410 Firmware
Dell Latitude 7420 Firmware<1.7.1
Dell Latitude 7420 Firmware
Dell Latitude 7520 Firmware<1.7.1
Dell Latitude 7520 Firmware
Dell Latitude 9410 Firmware<1.7.0
Dell Latitude 9410 Firmware
Dell Latitude 9420 Firmware<1.4.1
Dell Latitude 9420 Firmware
Dell Latitude 9510 Firmware<1.6.0
Dell Latitude 9510 Firmware
Dell Latitude 9520 Firmware<1.5.2
Dell Latitude 9520 Firmware
Dell Latitude 5421 Firmware<1.3.0_a03
Dell Latitude 5421 Firmware
Dell OptiPlex 3080 Firmware<2.1.1
Dell OptiPlex 3080 Firmware
Dell OptiPlex 3090 Firmware<1.2.0
Dell OptiPlex 3090 UFF Firmware
Dell OptiPlex 3280 AIO Firmware<1.7.0
Dell OptiPlex 3280 All-in-One Firmware
Dell OptiPlex 5080 Firmware<1.4.0
Dell OptiPlex 5080 Firmware
Dell OptiPlex 5090 Firmware<1.1.35
Dell OptiPlex 5090
Dell OptiPlex 5490 All-in-One Firmware<1.3.0
Dell OptiPlex 5490 All-in-One
Dell OptiPlex 7080 Firmware<1.4.0
Dell OptiPlex 7080 Firmware
Dell OptiPlex 7090 Tower Firmware<1.1.35
Dell OptiPlex 7090 Tower Firmware
Dell OptiPlex 7090 Ultra Firmware<1.2.0
Dell OptiPlex 7090 UFF Firmware
Dell OptiPlex 7480 All-in-One Firmware<1.7.0
Dell OptiPlex 7480 All-in-One Firmware
Dell OptiPlex 7490 AIO Firmware<1.3.0
Dell OptiPlex 7490 AIO
Dell OptiPlex 7780 AIO Firmware<1.7.0
Dell OptiPlex 7780 All-in-One Firmware
Dell Precision 17 M5750 Firmware<1.8.2
Dell Precision 17 M5750 Firmware
Dell Precision 3440 Firmware<1.4.0
Dell Precision 3440 Firmware
Dell Precision 3450 Firmware<1.1.35
Dell Precision 3450 Firmware
Dell Precision 3550 Firmware<1.6.0
Dell Precision 3550 Firmware
Dell Precision 3551 Firmware<1.6.0
Dell Precision 3551 Firmware
Dell Precision 3560 Firmware<1.7.1
Dell Precision 3560 Firmware
Dell Precision 3561 Firmware<1.3.0_a03
Dell Precision 3561 Firmware
Dell Precision 3640 Firmware<1.6.2
Dell Precision 3640 Firmware
Dell Precision 3650 Firmware<1.2.0
Dell Precision 3650 Tower
Dell Precision 5550 Firmware<1.8.1
Dell Precision 5550 Firmware
Dell Precision 5560 Firmware<1.3.2
Dell Precision 5560 Firmware
Dell Precision 5760 Firmware<1.1.3
Dell Precision 5760 Firmware
Dell Precision 7550 Firmware<1.8.0
Dell Precision 7550 Firmware
Dell Precision 7560 Firmware<1.1.2
Dell Precision 7560 Firmware
Dell Precision 7750 Firmware<1.8.0
Dell Precision 7750 Firmware
Dell Precision 7760 Firmware<1.1.2
Dell Precision 7780
Dell Vostro 14 5410 Firmware<2.1.0_a06
Dell Vostro 14 5410 Firmware
Dell Vostro 5510 Firmware<2.1.0_a06
Dell Vostro 15 5510
Dell Vostro 15 7510 Firmware<1.0.4
Dell Vostro 15 7510 Firmware
Dell Vostro 3400 Firmware<1.6.0
Dell Vostro 3400 Firmware
Dell Vostro 3500 Firmware<1.6.0
Dell Vostro 3500 Firmware
Dell Vostro 3501 Firmware<1.6.0
Dell Vostro 3501 Firmware
Dell Vostro 3681 Firmware<2.4.0
Dell Vostro 3681 Firmware
Dell Vostro 3690 Firmware<1.0.11
Dell Vostro 3690 Firmware
Dell Vostro 3881 Firmware<2.4.0
Dell Vostro 3881 Firmware
Dell Vostro 3888 Firmware<2.4.0
Dell Vostro 3888 Firmware
Dell Vostro 3890 Firmware<1.0.11
Dell Vostro 3890 Firmware
Dell Vostro 5300 Firmware<1.7.1
Dell Vostro 5300 Firmware
Dell Vostro 5301 Firmware<1.8.1
Dell Vostro 5301 Firmware
Dell Vostro 13 5310 Firmware<2.1.0
Dell Vostro 5310 Firmware
Dell Vostro 5401 Firmware<1.7.2
Dell Vostro 5401 Firmware
Dell Vostro 5402 Firmware<1.5.1
Dell Vostro 5402 Firmware
Dell Vostro 5501 Firmware<1.7.2
Dell Vostro 5501 Firmware
Dell Vostro 5502 Firmware<1.5.1
Dell Vostro 5502 Firmware
Dell Vostro 5880 Firmware<1.4.0
Dell Vostro 5880 Firmware
Dell Vostro 5890 Firmware<1.0.11
Dell Vostro 5890 Firmware
Dell Vostro 7500 Firmware<1.8.0
Dell Vostro 7500 Firmware
Dell XPS 13 9305 Firmware<1.0.8
Dell XPS 13 9305 Firmware
Dell XPS 13 9310 2-in-1<2.3.3
Dell XPS 13 9310 2-in-1
Dell XPS 13 2-in-1 9310 Firmware<3.0.0
Dell XPS 13 9310 Firmware
Dell XPS 9500 Firmware<1.8.1
Dell XPS 15 9500
Dell XPS 15 9510 Firmware<1.3.2
Dell XPS 15 9510 Firmware
Dell XPS 17 9700 Firmware<1.8.2
Dell XPS 17 9700 Firmware
Dell XPS 17 9710 Firmware<1.1.3
Dell XPS 17 9710 Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-21571?

    CVE-2021-21571 has been classified as a medium severity vulnerability.

  • How do I fix CVE-2021-21571?

    The fix for CVE-2021-21571 involves updating the affected Dell firmware to the latest version that addresses the certificate validation issue.

  • What products are affected by CVE-2021-21571?

    CVE-2021-21571 affects various Dell products including specific firmware versions of Alienware, Inspiron, G-series, Vostro, and Precision models.

  • What are the potential impacts of exploiting CVE-2021-21571?

    Exploitation of CVE-2021-21571 could allow an unauthenticated attacker to perform a person-in-the-middle attack, potentially leading to denial-of-service conditions.

  • Can CVE-2021-21571 be exploited remotely?

    Yes, CVE-2021-21571 can be exploited remotely without authentication due to improper certificate validation in the Dell UEFI BIOS stack.

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