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CVE-2022-22995: WDC-22005 Netatalk Security Vulnerabilities | Western Digital

The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of files. By exploiting these combination of primitives, an attacker can execute arbitrary code.

CVE
#vulnerability#mac#apple#git#rce#perl#samba#buffer_overflow#auth#zero_day

WDC Tracking Number: WDC-22005
Published: March 24, 2022

Last Updated: March 24, 2022

Description

Netatalk is an open-source Apple File Protocol fileserver that was being used by Western Digital products to access network shares and perform Time Machine backups. Multiple critical vulnerabilities have been discovered in Netatalk. Because Netatalk is unmaintained, we have removed Netatalk from our firmware released on January 10, 2022. Users can continue to access local network shares and perform Time Machine backup via SMB. For additional information, please refer to this KBA.

To take advantage of the latest security fixes, Western Digital recommends that users promptly update their devices to the latest firmware by clicking on the firmware update notification.

Product Impact

Minimum Fix Version

Last Updated

My Cloud PR2100

5.19.117

January 10, 2022

My Cloud PR4100

5.19.117

January 10, 2022

My Cloud EX4100

5.19.117

January 10, 2022

My Cloud EX2 Ultra

5.19.117

January 10, 2022

My Cloud Mirror Gen 2

5.19.117

January 10, 2022

My Cloud DL2100

5.19.117

January 10, 2022

My Cloud DL4100

5.19.117

January 10, 2022

My Cloud EX2100

5.19.117

January 10, 2022

My Cloud

5.19.117

January 10, 2022

WD Cloud

5.19.117

January 10, 2022

My Cloud Home

7.16-220

January 10, 2022

Advisory Summary

A stack-based buffer overflow vulnerability was discovered within the ad_addcomment function that could lead to an unauthenticated remote code execution. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer.

CVE Number: CVE-2022-0194

Reported By: Theori (@theori_io) working with Trend Micro’s Zero Day Initiative

An improper handling of exceptional conditions issue was found in the parse_entries function that did not properly handle parsing AppleDouble entries. This vulnerability could allow a remote attacker to carry out an unauthenticated remote command execution on affected versions of Netatalk.

CVE Number: CVE-2022-23121

Reporteb By: NCC Group EDG (Alex Plaskett, Cedric Halbronn, Aaron Adams) working with Trend Micro’s Zero Day Initiative

A stack-based buffer overflow vulnerability was discovered within the setfilparams function that could lead to an unauthenticated remote code execution. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer.

CVE Number: CVE-2022-23122

Reported By: Orange Tsai (@orange_8361) from DEVCORE Research Team working with Trend Micro’s Zero Day Initiative

An out-of-bounds read information disclosure vulnerability was discovered in the getdirparams method that could allow an attacker to disclose sensitive information or carry out an unauthenticated remote code execution on the device. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer.

CVE Number: CVE-2022-23123

Reported By: Orange Tsai (@orange_8361) from DEVCORE Research Team working with Trend Micro’s Zero Day Initiative

An out-of-bounds read information disclosure vulnerability was discovered in the get_finderinfo method that could allow an attacker to disclose sensitive information or carry out an unauthenticated remote code execution on the device. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer.

CVE Number: CVE-2022-23124

Reported By: Theori (@theori_io) working with Trend Micro’s Zero Day Initiative

A stack-based buffer overflow vulnerability was discovered within the copyapplfile function that could lead to an unauthenticated remote code execution. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer.

CVE Number: CVE-2022-23125

Reported By: Theori (@theori_io) working with Trend Micro’s Zero Day Initiative

The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of files. By exploiting these combination of primitives, an attacker can execute arbitrary code.

CVE Number: CVE-2022-22995

Reported By: Corentin BAYET (@OnlyTheDuck), Etienne HELLUY-LAFONT and Luca MORO (@johncool__) from Synacktiv working with Trend Micro’s Zero Day Initiative

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Ubuntu Security Notice 6786-1 - It was discovered that Netatalk did not properly protect an SMB and AFP default configuration. A remote attacker could possibly use this issue to execute arbitrary code.

Gentoo Linux Security Advisory 202311-02

Gentoo Linux Security Advisory 202311-2 - Multiple vulnerabilities have been discovered in Netatalk, which could lead to remote code execution Versions greater than or equal to 3.1.18 are affected.

Debian Security Advisory 5503-1

Debian Linux Security Advisory 5503-1 - Multiple security issues were discovered in Netatalk, an implementation of the Apple Filing Protocol (AFP) for offering file service (mainly) to macOS clients, which may result in the execution of arbitrary code or information disclosure.

Debian Security Advisory 5503-1

Debian Linux Security Advisory 5503-1 - Multiple security issues were discovered in Netatalk, an implementation of the Apple Filing Protocol (AFP) for offering file service (mainly) to macOS clients, which may result in the execution of arbitrary code or information disclosure.

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Ubuntu Security Notice 6146-1 - It was discovered that Netatalk did not properly validate the length of user-supplied data in the DSI structures. A remote attacker could possibly use this issue to execute arbitrary code with the privileges of the user invoking the programs. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. It was discovered that Netatalk did not properly validate the length of user-supplied data in the ad_addcomment function. A remote attacker could possibly use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

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Ubuntu Security Notice USN-6146-1

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CVE-2022-23125: ZDI-22-526

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the copyapplfile function. When parsing the len element, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15869.

CVE-2022-23122: Netatalk Release Notes

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CVE-2022-23123: ZDI-22-528

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the getdirparams method. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15830.

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