Synology-SA-21:03 DSM

Publish Time: 2021-02-23 09:15:43 UTC+8

Last Updated: 2021-06-11 09:45:46 UTC+8

Severity
Important
Status
Accepted

Abstract

Multiple vulnerabilities allow remote attackers to obtain sensitive information or local users to execute arbitrary code via a susceptible version of DiskStation Manager (DSM).

Affected Products

Product Severity Fixed Release Availability
DSM 6.2 Important Upgrade to 6.2.4-25553 or above.
DSM UC 3.0 Important Pending
SkyNAS Important Pending
VS960HD Not affected N/A

Mitigation

None

Detail

  • CVE-2021-26563

    • Severity: Important
    • CVSS3 Base Score: 8.2
    • CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    • Improper access control vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows local users to obtain sensitive information via a crafted kernel module.

  • CVE-2021-33182

    • Severity: Moderate
    • CVSS3 Base Score: 5.0
    • CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
    • Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in PDF Viewer component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows remote authenticated users to read limited files via unspecified vectors.

  • CVE-2021-29088

    • Severity: Important
    • CVSS3 Base Score: 7.8
    • CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    • Improper limitation of a pathname to a restricted directory ('Path Traversal') in cgi component in Synology DiskStation Manager (DSM) before 6.2.4-25553 allows local users to execute arbitrary code via unspecified vectors.

Acknowledgement

  • Claudio Bozzato of Cisco Talos

  • Bing-Jhong Jheng

Revision

Revision Date Description
1 2021-02-23 Initial public release.
2 2021-06-10 Disclosed vulnerability details.
3 2021-05-28 Updated severity for VS960HD in Affected Products.