Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Synology | Diskstation Manager | >= 6.2, < 6.2.3-25426-3 |
| Debian | Debian Linux | 10.0 |
| Netatalk | Netatalk | < 3.1.13 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2023/05/msg00018.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202311-02Issue TrackingThird Party Advisory
- https://www.debian.org/security/2023/dsa-5503Third Party Advisory
- https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-492/Third Party AdvisoryVDB Entry
- https://lists.debian.org/debian-lts-announce/2023/05/msg00018.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202311-02Issue TrackingThird Party Advisory
- https://www.debian.org/security/2023/dsa-5503Third Party Advisory
- https://www.synology.com/zh-hk/security/advisory/Synology_SA_20_26Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-492/Third Party AdvisoryVDB Entry
FAQ
What is CVE-2021-31439?
CVE-2021-31439 is a vulnerability with a CVSS score of 8.8 (HIGH). 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. T...
How severe is CVE-2021-31439?
CVE-2021-31439 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31439?
Check the references section above for vendor advisories and patch information. Affected products include: Synology Diskstation Manager, Debian Debian Linux, Netatalk Netatalk.