CVE-2023-39958

Summary

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.

Affected Software

VendorProductVersion RangeStatus
nextcloudsecurity-advisories>= 22.0.0, < 22.2.10.13affected
nextcloudsecurity-advisories>= 23.0.0, < 23.0.12.8affected
nextcloudsecurity-advisories>= 24.0.0, < 24.0.12.5affected
nextcloudsecurity-advisories>= 25.0.0, < 25.0.9affected
nextcloudsecurity-advisories>= 26.0.0, < 26.0.4affected
nextcloudsecurity-advisories>= 27.0.0, < 27.0.1affected

Weaknesses

  • CWE-307: CWE-307: Improper Restriction of Excessive Authentication Attempts

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References