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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
#vulnerability#rce#perl#buffer_overflow#auth

March 23rd, 2022

(Pwn2Own) Netatalk copyapplfile Stack-based Buffer Overflow Remote Code Execution Vulnerability****ZDI-22-526
ZDI-CAN-15869

CVE ID

CVE-2022-23125

CVSS SCORE

9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

AFFECTED VENDORS

Netatalk

AFFECTED PRODUCTS

Netatalk

VULNERABILITY DETAILS

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.

ADDITIONAL DETAILS

Netatalk has issued an update to correct this vulnerability. More details can be found at:
https://netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html

DISCLOSURE TIMELINE

  • 2021-12-08 - Vulnerability reported to vendor
  • 2022-03-23 - Coordinated public release of advisory

CREDIT

Theori (@theori_io)

BACK TO ADVISORIES

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