Vulnerability · Published Oct 16, 2023 · Assigned by GitHub_M

CVE-2023-45151OAuth2 client_secret stored in plain text in the Nextcloud database

Medium 6.5

In plain English

A medium-severity security flaw in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.6%top 50.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 vulnerability.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	>= 25.0.0, < 25.0.8>= 26.0.0, < 26.0.3>= 27.0.0, < 27.0.1

Weakness: CWE-312 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhgv-jcg9-p4m9 x_refsource_CONFIRM
https://github.com/nextcloud/server/pull/38398 x_refsource_MISC
https://hackerone.com/reports/1994324 x_refsource_MISC