Exploited
critical
10
CWE
287
Advisory Published
Updated

CVE-2021-33045: Dahua IP Camera Authentication Bypass Vulnerability

First published: Wed Sep 15 2021(Updated: )

Dahua IP cameras and related products contain an authentication bypass vulnerability when the loopback device is specified by the client during authentication.

Credit: cybersecurity@dahuatech.com cybersecurity@dahuatech.com

Affected SoftwareAffected VersionHow to fix
Dahuasecurity Ipc-hum7xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hum7xxx
Dahuasecurity Ipc-hx3xxx Firmware<2.800.0000000.29.r.210630
Dahuasecurity Ipc-hx3xxx
Dahuasecurity Ipc-hx5xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hx5xxx
Dahuasecurity Nvr-1xxx Firmware<4.001.0000005.1.r.210709
Dahuasecurity Nvr-1xxx
Dahuasecurity Nvr-2xxx Firmware<4.001.0000000.1.r.210710
Dahuasecurity Nvr-2xxx
Dahuasecurity Nvr-4xxx Firmware<4.001.0000005.1.r.210713
Dahuasecurity Nvr-4xxx
Dahuasecurity Nvr-5xxx Firmware<4.001.0000000.0.r.210710
Dahuasecurity Nvr-5xxx
Dahuasecurity Nvr-6xx Firmware<4.001.0000001.1.r.210716
Dahuasecurity Nvr-6xx
Dahuasecurity Vth-542xh Firmware<4.500.0000002.0.r.210715
Dahuasecurity Vth-542xh
Dahuasecurity Vto-65xxx Firmware<4.300.0000004.0.r.210715
Dahuasecurity Vto-65xxx
Dahuasecurity Vto-75x95x Firmware<4.300.0000003.0.r.210714
Dahuasecurity Vto-75x95x
Dahuasecurity Xvr-4x04 Firmware
Dahuasecurity Xvr-4x04
Dahuasecurity Xvr-4x08 Firmware<4.001.0000001.1.r.210709
Dahuasecurity Xvr-4x08
Dahuasecurity Xvr-4x04 Firmware<4.001.0000001.1.r.210709
Dahuasecurity Xvr-5x04 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x04
Dahuasecurity Xvr-5x08 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x08
Dahuasecurity Xvr-5x16 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x16
Dahuasecurity Xvr-7x16 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-7x16
Dahuasecurity Xvr-7x32 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-7x32
All of
Dahuasecurity Ipc-hum7xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hum7xxx
All of
Dahuasecurity Ipc-hx3xxx Firmware<2.800.0000000.29.r.210630
Dahuasecurity Ipc-hx3xxx
All of
Dahuasecurity Ipc-hx5xxx Firmware<2.820.0000000.5.r.210705
Dahuasecurity Ipc-hx5xxx
All of
Dahuasecurity Nvr-1xxx Firmware<4.001.0000005.1.r.210709
Dahuasecurity Nvr-1xxx
All of
Dahuasecurity Nvr-2xxx Firmware<4.001.0000000.1.r.210710
Dahuasecurity Nvr-2xxx
All of
Dahuasecurity Nvr-4xxx Firmware<4.001.0000005.1.r.210713
Dahuasecurity Nvr-4xxx
All of
Dahuasecurity Nvr-5xxx Firmware<4.001.0000000.0.r.210710
Dahuasecurity Nvr-5xxx
All of
Dahuasecurity Nvr-6xx Firmware<4.001.0000001.1.r.210716
Dahuasecurity Nvr-6xx
All of
Dahuasecurity Vth-542xh Firmware<4.500.0000002.0.r.210715
Dahuasecurity Vth-542xh
All of
Dahuasecurity Vto-65xxx Firmware<4.300.0000004.0.r.210715
Dahuasecurity Vto-65xxx
All of
Dahuasecurity Vto-75x95x Firmware<4.300.0000003.0.r.210714
Dahuasecurity Vto-75x95x
All of
Dahuasecurity Xvr-4x04 Firmware
Dahuasecurity Xvr-4x04
All of
Dahuasecurity Xvr-4x08 Firmware<4.001.0000001.1.r.210709
Dahuasecurity Xvr-4x08
All of
Dahuasecurity Xvr-4x04 Firmware<4.001.0000001.1.r.210709
Dahuasecurity Xvr-4x04
All of
Dahuasecurity Xvr-5x04 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x04
All of
Dahuasecurity Xvr-5x08 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x08
All of
Dahuasecurity Xvr-5x16 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-5x16
All of
Dahuasecurity Xvr-7x16 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-7x16
All of
Dahuasecurity Xvr-7x32 Firmware<4.001.0000003.1.r.210710
Dahuasecurity Xvr-7x32
Dahua IP Camera Firmware
All of
<2.820.0000000.5.r.210705
All of
<2.800.0000000.29.r.210630
All of
<2.820.0000000.5.r.210705
All of
<4.001.0000005.1.r.210709
All of
<4.001.0000000.1.r.210710
All of
<4.001.0000005.1.r.210713
All of
<4.001.0000000.0.r.210710
All of
<4.001.0000001.1.r.210716
All of
<4.500.0000002.0.r.210715
All of
<4.300.0000004.0.r.210715
All of
<4.300.0000003.0.r.210714
All of
All of
<4.001.0000001.1.r.210709
All of
<4.001.0000001.1.r.210709
All of
<4.001.0000003.1.r.210710
All of
<4.001.0000003.1.r.210710
All of
<4.001.0000003.1.r.210710
All of
<4.001.0000003.1.r.210710
All of
<4.001.0000003.1.r.210710

Remedy

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-33045?

    CVE-2021-33045 refers to the identity authentication bypass vulnerability found in some Dahua products during the login process.

  • How severe is CVE-2021-33045?

    CVE-2021-33045 has a severity rating of 9.8, indicating a critical vulnerability.

  • Which Dahua products are affected by CVE-2021-33045?

    Dahua products such as Dahuasecurity Ipc-hum7xxx Firmware, Dahuasecurity Ipc-hx3xxx Firmware, Dahuasecurity Ipc-hx5xxx Firmware, Dahuasecurity Nvr-1xxx Firmware, Dahuasecurity Nvr-2xxx Firmware, Dahuasecurity Nvr-4xxx Firmware, Dahuasecurity Nvr-5xxx Firmware, Dahuasecurity Nvr-6xx Firmware, Dahuasecurity Vth-542xh Firmware, Dahuasecurity Vto-65xxx Firmware, Dahuasecurity Vto-75x95x Firmware, Dahuasecurity Xvr-4x08 Firmware, Dahuasecurity Xvr-5x04 Firmware, Dahuasecurity Xvr-5x08 Firmware, Dahuasecurity Xvr-5x16 Firmware, Dahuasecurity Xvr-7x16 Firmware, and Dahuasecurity Xvr-7x32 Firmware may be affected.

  • How can an attacker exploit CVE-2021-33045?

    An attacker can exploit CVE-2021-33045 by bypassing device identity authentication using malicious data packets.

  • Where can I find more information about CVE-2021-33045?

    You can find more information about CVE-2021-33045 on the Dahua Security website.

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