CVE-2023-39963

Summary

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 20.0.0 and prior to versions 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, a missing password confirmation allowed an attacker, after successfully stealing a session from a logged in user, to create app passwords for the victim. Nextcloud server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.9, 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>= 20.0.0, < 20.0.14.15affected
nextcloudsecurity-advisories>= 21.0.0, < 21.0.9.13affected
nextcloudsecurity-advisories>= 22.0.0, < 22.2.10.14affected
nextcloudsecurity-advisories>= 23.0.0, < 23.0.12.9affected
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-284: CWE-284: Improper Access Control

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References