Zyxel security advisory for command injection & buffer overflow of CPE, fiber ONTs, & WiFi extenders

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Zyxel_May
Zyxel_May Posts: 129  Ally Member
First Anniversary First Comment
edited January 2023 in Security Advisories

CVE: CVE-2022-43389CVE-2022-43390CVE-2022-43391CVE-2022-43392

Summary

Zyxel is aware of multiple vulnerabilities reported by Positive Technologies and advises users to install the applicable firmware updates for optimal protection.

 

What are the vulnerabilities?

CVE-2022-43389

A buffer overflow vulnerability in the library of the web server in some 5G NR/4G LTE CPE devices, which could allow a remote unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device. Note that the WAN access is disabled by default on most devices.

CVE-2022-43390

A command injection vulnerability in the CGI program of some 5G NR/4G LTE CPE, DSL/Ethernet CPE, fiber ONT, and WiFi extender devices, which could allow a remote authenticated attacker to execute some OS commands on a vulnerable device by sending a crafted HTTP request. Note that the WAN access is disabled by default on most devices.

CVE-2022-43391

A buffer overflow vulnerability in the parameter of the CGI program in some 5G NR/4G LTE CPE, DSL/Ethernet CPE, fiber ONT, and WiFi extender devices, which could allow a remote authenticated attacker to cause DoS conditions by sending a crafted HTTP request. Note that the WAN access is disabled by default on most devices.

CVE-2022-43392

A buffer overflow vulnerability in the parameter of web server in some 5G NR/4G LTE CPE, DSL/Ethernet CPE, fiber ONT, and WiFi extender devices, which could allow a remote authenticated attacker to cause DoS conditions by sending a crafted authorization request. Note that the WAN access is disabled by default on most devices.

 

What versions are vulnerable—and what should you do?

After a thorough investigation, we have identified the vulnerable products that are within their vulnerability support period and released updates to address the vulnerabilities, as shown in the following tables.

Table 1. Models affected by CVE-2022-43389

Product

Affected model

Patch availability*

5G NR/

4G LTE CPE

LTE3202-M437

V1.00(ABWF.1)C0

LTE3316-M604

V2.00(ABMP.6)C0

LTE7480-M804

V1.00(ABRA.6)C0

LTE7490-M904

V1.00(ABQY.5)C0

Nebula FWA510

V1.15(ACGD.3)C0

Nebula FWA710

V1.15(ACGC.3)C0

Nebula NR7101

V1.15(ACCC.3)C0

NR5103

V4.19(ABYC.3)C0

NR5103E

Hotfix available now
Standard firmware V1.00(ACDJ.0)C0 in Apr. 2023

NR7101

V1.00(ABUV.7)C0

NR7102

V1.00(ABYD.2)C0

NR7103

V1.00(ACCZ.1)C0

 

Table 2. Models affected by CVE-2022-43390

Product

Affected model

Patch availability*

5G NR/

4G LTE CPE

LTE7480-M804

V1.00(ABRA.6)C0

LTE7490-M904

V1.00(ABQY.5)C0

Nebula NR5101

V1.15(ACCG.3)C0

Nebula NR7101

V1.15(ACCC.3)C0

NR5101

V1.00(ABVC.6)C0

NR7101

V1.00(ABUV.7)C0

NR7102

V1.00(ABYD.2)C0

DSL/Ethernet CPE

DX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

DX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in May 2023

EMG3525-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5523-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5723-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

EX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

EX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in Jun. 2023

EX5501-B0

Hotfix available now
Standard firmware V5.17(ABRY.4)C0 in Jun. 2023

EX5600-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T0

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

VMG3927-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

VMG4005-B50A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG4005-B60A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG8623-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

VMG8825-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

Fiber ONT

AX7501-B0

V5.17(ABPC.3)C0

PM3100-T0

V5.42(ACBF.1.1)C0

PM5100-T0

V5.42(ACBF.1.1)C0

PM7300-T0

V5.42(ABYY.1)C0

WiFi extender

WX3100-T0

Hotfix available now
Standard firmware V5.50(ABVL.2)C0 in Jul. 2023

WX3401-B0

V5.17(ABVE.2.1)C0

WX5600-T0

Hotfix available now
Standard firmware V5.70(ACEB.1)C0 in Feb. 2023

 

Table 3. Models affected by CVE-2022-43391

Product

Affected model

Patch availability*

5G NR/

4G LTE CPE

LTE3301-PLUS

Hotfix available now
Standard firmware V1.00(ABQU.5)C0 in Feb. 2023

LTE5388-M804

Hotfix available now
Standard firmware V1.00(ABSQ.4)C0 in Apr. 2023

LTE5398-M904

Hotfix available now
Standard firmware V1.00(ABQV.3)C0 in Apr. 2023

LTE7240-M403

Hotfix available now
Standard firmware V2.00(ABMG.6)C0 in May 2023

LTE7461-M602

Hotfix available now
Standard firmware V2.00(ABQN.6)C0 in May 2023

LTE7480-M804

V1.00(ABRA.6)C0

LTE7480-S905

Hotfix available now
Standard firmware V1.00(ABVN.6)C0 in May 2023

LTE7485-S905

Hotfix available now
Standard firmware V2.00(ABQT.6)C0 in May 2023

LTE7490-M904

V1.00(ABQY.5)C0

Nebula LTE3301-PLUS

V1.15(ACCA.3)C0

Nebula LTE7461-M602

V1.15(ACEV.3)C0

Nebula NR5101

V1.15(ACCG.3)C0

Nebula NR7101

V1.15(ACCC.3)C0

NR5101

V1.00(ABVC.6)C0

NR7101

V1.00(ABUV.7)C0

NR7102

V1.00(ABYD.2)C0

DSL/Ethernet CPE

DX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

DX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in May 2023

EMG3525-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5523-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5723-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

EX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

EX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in Jun. 2023

EX5501-B0

Hotfix available now
Standard firmware V5.17(ABRY.4)C0 in Jun. 2023

EX5600-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T0

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

VMG3927-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

VMG4005-B50A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG4005-B60A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG8623-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

VMG8825-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

Fiber ONT

AX7501-B0

V5.17(ABPC.3)C0

PM3100-T0

V5.42(ACBF.1.1)C0

PM5100-T0

V5.42(ACBF.1.1)C0

PM7300-T0

V5.42(ABYY.1)C0

WiFi extender

WX3100-T0

Hotfix available now
Standard firmware V5.50(ABVL.2)C0 in Jul. 2023

WX3401-B0

V5.17(ABVE.2.1)C0

WX5600-T0

Hotfix available now
Standard firmware V5.70(ACEB.1)C0 in Feb. 2023

 

Table 4. Models affected by CVE-2022-43392

Product

Affected model

Patch availability*

5G NR/

4G LTE CPE

LTE3301-PLUS

Hotfix available now
Standard firmware V1.00(ABQU.5)C0 in Feb. 2023

LTE5388-M804

Hotfix available now
Standard firmware V1.00(ABSQ.4)C0 in Apr. 2023

LTE5398-M904

Hotfix available now
Standard firmware V1.00(ABQV.3)C0 in Apr. 2023

LTE7240-M403

Hotfix available now
Standard firmware V2.00(ABMG.6)C0 in May 2023

LTE7461-M602

Hotfix available now
Standard firmware V2.00(ABQN.6)C0 in May 2023

LTE7480-M804

V1.00(ABRA.6)C0

LTE7480-S905

Hotfix available now
Standard firmware V1.00(ABVN.6)C0 in May 2023

LTE7485-S905

Hotfix available now
Standard firmware V2.00(ABQT.6)C0 in May 2023

LTE7490-M904

V1.00(ABQY.5)C0

Nebula LTE3301-PLUS

V1.15(ACCA.3)C0

Nebula LTE7461-M602

V1.15(ACEV.3)C0

Nebula NR5101

V1.15(ACCG.3)C0

Nebula NR7101

V1.15(ACCC.3)C0

NR5101

V1.00(ABVC.6)C0

NR7101

V1.00(ABUV.7)C0

NR7102

V1.00(ABYD.2)C0

DSL/Ethernet CPE

DX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

DX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in May 2023

EMG3525-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5523-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

EMG5723-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

EX3301-T0

Hotfix available now
Standard firmware V5.50(ABVY.4)C0 in Sep. 2023

EX5401-B0

Hotfix available now
Standard firmware V5.17(ABYO.4)C0 in Jun. 2023

EX5501-B0

Hotfix available now
Standard firmware V5.17(ABRY.4)C0 in Jun. 2023

EX5600-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T0

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

EX5601-T1

Hotfix available now
Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023

VMG3927-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

VMG4005-B50A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG4005-B60A

Hotfix available now
Standard firmware V5.17(ABQA.3)C0 in Apr. 2023

VMG8623-T50B

Hotfix available now
Standard firmware V5.50(ABPM.8)C0 in Sep. 2023

VMG8825-T50K

Hotfix available now
Standard firmware V5.50(ABOM.9)C0 in Apr. 2023

Fiber ONT

AX7501-B0

V5.17(ABPC.3)C0

PM3100-T0

V5.42(ACBF.1.1)C0

PM5100-T0

V5.42(ACBF.1.1)C0

PM7300-T0

V5.42(ABYY.1)C0

WiFi

extender

WX3100-T0

Hotfix available now
Standard firmware V5.50(ABVL.2)C0 in Jul. 2023

WX3401-B0

V5.17(ABVE.2.1)C0

WX5600-T0

Hotfix available now
Standard firmware V5.70(ACEB.1)C0 in Feb. 2023

*For the patch firmware without a download link, please reach out to your local Zyxel support team for the file.

Please note that the table does NOT include customized models for internet service providers (ISPs).

For ISPs, please contact your Zyxel sales or service representatives for further details.

For end-users who received your Zyxel device from an ISP, we recommend you reach out to the ISP’s support team directly, as the device may have custom-built settings.

For end-users who purchased the Zyxel devices on your own, please contact your local Zyxel support team for the new firmware file to ensure optimal protection, or visit our forum for further assistance.

 

Got a question?

Please contact your local service rep or visit Zyxel’s Community for further information or assistance.

 

Acknowledgement

Thanks to Nikita Abramov from Positive Technologies for reporting the issues to us.

 

Revision history

2023-1-11: Initial release

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Comments

  • Forzic
    Forzic Posts: 1
    First Comment
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    Hotfix available now
    Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023 link download please?

  • rb1963
    rb1963 Posts: 6
    Friend Collector First Comment
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    Someone could please post link for V5.70(ACDZ.1)C0?

    Thanks. KR.

  • SEJ
    SEJ Posts: 111  Ally Member
    First Anniversary 10 Comments Friend Collector First Answer
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    Hi there

    You may need to check it with your ISP for FW upgrade.

  • rb1963
    rb1963 Posts: 6
    Friend Collector First Comment
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    @SEJ

    The ISP (WindTre - Italy) no longer iupdate the mdoem from years….!!

  • SEJ
    SEJ Posts: 111  Ally Member
    First Anniversary 10 Comments Friend Collector First Answer
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    Too bad, if the device came from WindTre, I guess the firmware is also a customized version (not the standard version in this post) and can only be updated/managed by WindTre.

    It seems still need to check with WindTre.

  • Dsangrereal
    Options

    NR5103E

    Hotfix available now
    Standard firmware V5.70(ACDZ.1)C0 in Feb. 2023 link download please?

  • YeK
    YeK Posts: 150  Master Member
    First Anniversary 10 Comments Friend Collector
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    @Dsangrereal,

    5.70(ACDZ.1)C0 isn't used on NR5103E, please help to provide serial number of your device and then we will check which one is correct for you.

  • tonygibbs16
    tonygibbs16 Posts: 863  Guru Member
    First Anniversary 10 Comments Friend Collector First Answer
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    NR5103E

    Hotfix available now
    Standard firmware V1.00(ACDJ.0)C0 in Apr. 2023

  • jzm2bjo
    Options

    Dear Zyxel,

    Please tell me if I am protected or at risk and which should be my first FW update if so.

    Model NR5103

    Serial S210Z35005660

    Software: 5GEE_Router_V01.12 or V4.19(ACAF.2)b25

    Thanks!

  • shak
    shak Posts: 10
    Friend Collector First Comment
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