Netatalk Security Advisory
| Subject | Arbitrary code execution in dsi_writeinit |
|---|---|
| CVE ID# | CVE-2022-43634 |
| Date | 2023/02/06 advisory published retroactively; date is approximate |
| Versions | 3.0.0 - 3.1.14 |
| Summary | Lack of validation of user-input data leads to remote code execution in the dsi_writeinit function |
Description
This vulnerability allows remote attackers to execute arbitrary code on Netatalk without requiring authentication.
The flaw resides in the dsi_writeinit function, where the length of user-supplied data is not properly validated before being copied into a fixed-length heap-based buffer.
An attacker can exploit this vulnerability to execute code with root-level privileges.
Patch Availability
Apply the patch with git hash 5fcb4ab to hotfix your local Netatalk deployment.
Additionally, Netatalk 3.1.15 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:
Corentin BAYET (@OnlyTheDuck), Etienne HELLUY-LAFONT and Luca MORO (@johncool__) from Synacktiv
Patch developed by:
Etienne HELLUY-LAFONT from Synacktiv
Go back to the Security Policy.
