SARA / Free Tools / CVE / CVE-2023-45151

CVE-2023-45151 — Nextcloud server is an open source home cloud platform

Nextcloud server is an open source home cloud platform. Affected versions of Nextcloud stored OAuth2 tokens in plaintext which allows an attacker who has gained access to the server to potentially elevate their privilege. This issue has been addressed and users are recommended to

CVSS
6.5 MEDIUM
EPSS
0.63% (top 30.00%)
CWE
CWE-312
Published
2023-10-16T18:41:28.713Z
Last modified
2024-09-16T14:57:44.642Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

01What is this vulnerability?

Nextcloud server is an open source home cloud platform. Affected versions of Nextcloud stored OAuth2 tokens in plaintext which allows an attacker who has gained access to the server to potentially elevate their privilege. This issue has been addressed and users are recommended to upgrade their Nextcloud Server to version 25.0.8, 26.0.3 or 27.0.1. There are no known workarounds for this…

02Affected products

VendorProductVersions
nextcloudsecurityadvisories — >= 25.0.0, < 25.0.8, >= 26.0.0, < 26.0.3, >= 27.0.0, < 27.0.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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