CVE-2021-31439: Synology DiskStation Manager Netatalk dsi_doff Heap-based Buffer Overflow Remote Code Execution Vulnerability
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/netatalkto a version that resolves this vulnerability.Fixed in 4.2.3~ds-1+deb13u2Fixed in 4.5.1~ds-1 - Upgrade
Upgrade
alpine/netatalkto a version that resolves this vulnerability.Fixed in 3.1.13-r0
Event History
Frequently Asked Questions
What is the vulnerability ID for this Synology DiskStation Manager vulnerability?
The vulnerability ID for this Synology DiskStation Manager vulnerability is CVE-2021-31439.
How severe is CVE-2021-31439?
CVE-2021-31439 has a severity rating of 8.8 out of 10.
How can this vulnerability be exploited?
This vulnerability can be exploited by network-adjacent attackers to execute arbitrary code on affected installations of Synology DiskStation Manager.
Is authentication required to exploit CVE-2021-31439?
No, authentication is not required to exploit CVE-2021-31439.
What is the affected software in this vulnerability?
The affected software in this vulnerability is Synology DiskStation Manager.