CVE-2021-31439
Published: 21 May 2021
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology DiskStation Manager. Authentication is not required to exploit this vulnerablity. The specific flaw exists within the processing of DSI structures in Netatalk. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12326.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
netatalk Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| focal |
Released
(3.1.12~ds-4ubuntu0.20.04.1)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Released
(3.1.12~ds-9ubuntu0.22.04.1)
|
|
| kinetic |
Not vulnerable
(3.1.13~ds-2)
|
|
| lunar |
Not vulnerable
(3.1.13~ds-2)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(3.1.13~ds-1)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://github.com/Netatalk/Netatalk/commit/779717df2ed39b701deaf2472b42d59ff50fab7f |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Adjacent |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |