Synology-SA-24:11 Synology Active Backup for Business Agent

Abstract

Multiple vulnerabilities allow adjacent man-in-the-middle attackers to obtain user credential, local users to conduct denial-of-service attacks, and local users to obtain user credential via a susceptible version of Synology Active Backup for Business Agent.

Affected Products

Product	Severity	Fixed Release Availability
Synology Active Backup for Business Agent	Moderate	Upgrade to 2.7.0-3221 or above.

Mitigation

None

Detail

• CVE-2023-52947

  • Severity: Moderate
  • CVSS3 Base Score: 4.0
  • CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • Missing authentication for critical function vulnerability in logout functionality in Synology Active Backup for Business Agent before 2.6.3-3101 allows local users to logout the client via unspecified vectors. The backup functionality will continue to operate and will not be affected by the logout.

• CVE-2023-52948

  • Severity: Moderate
  • CVSS3 Base Score: 5.0
  • CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
  • Missing encryption of sensitive data vulnerability in settings functionality in Synology Active Backup for Business Agent before 2.7.0-3221 allows local users to obtain user credential via unspecified vectors.

• CVE-2023-52949

  • Severity: Moderate
  • CVSS3 Base Score: 5.5
  • CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • Missing authentication for critical function vulnerability in proxy settings functionality in Synology Active Backup for Business Agent before 2.7.0-3221 allows local users to obtain user credential via unspecified vectors.

• CVE-2023-52950

  • Severity: Moderate
  • CVSS3 Base Score: 5.3
  • CVSS3 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Missing encryption of sensitive data vulnerability in login component in Synology Active Backup for Business Agent before 2.7.0-3221 allows adjacent man-in-the-middle attackers to obtain user credential via unspecified vectors.

Acknowledgement

Zhao Runzi (赵润梓)

Reference

• CVE-2023-52950
• CVE-2023-52947
• CVE-2023-52948
• CVE-2023-52949

Revision

Revision	Date	Description
1	2024-09-26	Initial public release.
2	2024-09-26	Disclosed vulnerability details.