Vulnerability · Published Mar 31, 2023 · Assigned by GitHub_M

CVE-2023-28845Chat room membership disclosed via autocompletion in Nextcloud talk

Low 3.5

In plain English

A low-severity improper access control 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 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)3.5Low

Exploit odds (30 days)0.4%top 61.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Nextcloud talk is a video & audio conferencing app for Nextcloud. In affected versions the talk app does not properly filter access to a conversations member list. As a result an attacker could use this vulnerability to gain information about the members of a Talk conversation, even if they themselves are not members. It is recommended that the Nextcloud Talk is upgraded to 14.0.9 or 15.0.4. There are no known workarounds for this vulnerability.

Affected products (as reported)

Vendor	Product	Versions
nextcloud	security-advisories	>= 15.0.0, < 15.0.4>= 14.0.0, < 14.0.9

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3m6r-479j-4chf x_refsource_CONFIRM
https://github.com/nextcloud/spreed/pull/8651 x_refsource_MISC