Vulnerability · Published May 26, 2023 · Assigned by GitHub_M

CVE-2023-32318User session not correctly destroyed on logout

High 7.2

In plain English

A high-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 0.2% (higher than 11% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.2%top 88.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nextcloud server provides a home for data. A regression in the session handling between Nextcloud Server and the Nextcloud Text app prevented a correct destruction of the session on logout if cookies were not cleared manually. After successfully authenticating with any other account the previous session would be continued and the attacker would be authenticated as the previously logged in user. It is recommended that the Nextcloud Server is upgraded to 25.0.6 or 26.0.1.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	>= 25.0.2, < 25.0.6>= 26.0.0, < 26.0.1

Weakness: CWE-613 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q8c4-chpj-6v38 x_refsource_CONFIRM
https://github.com/nextcloud/text/pull/3946 x_refsource_MISC