Netatalk Security Advisory
| Subject | Arbitrary code execution in setfilparams |
|---|---|
| CVE ID# | CVE-2022-23122 |
| Date | 2022/03/21 advisory published retroactively; date is approximate |
| Versions | 3.0.0 - 3.1.12 |
| Summary | Lack of validation of user-input data leads remote code execution in the setfilparams function |
Description
This vulnerability allows remote attackers to execute arbitrary code on affected Netatalk installations without requiring authentication.
The flaw resides in the setfilparams function, where user-supplied data is not properly validated before being copied into a fixed-length stack-based buffer.
An attacker can exploit this vulnerability to execute code with root-level privileges.
Patch Availability
Apply the patch with git hash 4a8f6c9 to hotfix your local Netatalk deployment.
Additionally, Netatalk 3.1.13 has been released which contains the security patch. Netatalk administrators are advised to upgrade to this version or apply the patch as soon as possible.
CVSS Calculation
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (9.8)
Workaround
None.
Credits
Vulnerability found and reported by:
Orange Tsai (@orange_8361) from DEVCORE Research Team
Patch developed by:
Ralph Boehme of the Netatalk and Samba teams
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