Bug 834803 (CVE-2021-41239, CVE-2021-41241) – <www-apps/nextcloud-21.0.6: multiple vulnerabilities

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description John Helmert III 2022-03-09 01:28:35 UTC]

CVE-2021-41239 (https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g722-cm3h-8wrx):

Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.

CVE-2021-41241 (https://github.com/nextcloud/security-advisories/security/advisories/GHSA-m4wp-r357-4q94):

Nextcloud server is a self hosted system designed to provide cloud style services. The groupfolders application for Nextcloud allows sharing a folder with a group of people. In addition, it allows setting "advanced permissions" on subfolders, for example, a user could be granted access to the groupfolder but not specific subfolders. Due to a lacking permission check in affected versions, a user could still access these subfolders by copying the groupfolder to another location. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. Users unable to upgrade should disable the "groupfolders" application in the admin settings.

Please stabilize. >=21.0.6.

[Comment 1 Bernard Cafarelli 2022-06-02 15:59:54 UTC]

We have 23.0.3 as current stable (and pending security stabling for newer .5 in bug #848873), 20/21 are gone from tree and 22.2 we only have newer 22.2.7. So everything looks good for this one

[Comment 2 John Helmert III 2022-06-02 19:34:09 UTC]

Thanks!

[Comment 3 Larry the Git Cow 2022-08-10 22:33:49 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=b56f993e2e4fa0778f67ba7d3b8fbb350d4c7386

commit b56f993e2e4fa0778f67ba7d3b8fbb350d4c7386
Author:     GLSAMaker <[e-mail]>
AuthorDate: 2022-08-10 22:31:11 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2022-08-10 22:33:19 +0000

    [ GLSA 202208-17 ] Nextcloud: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/797253
    Bug: https://bugs.gentoo.org/802096
    Bug: https://bugs.gentoo.org/812443
    Bug: https://bugs.gentoo.org/820368
    Bug: https://bugs.gentoo.org/834803
    Bug: https://bugs.gentoo.org/835073
    Bug: https://bugs.gentoo.org/848873
    Signed-off-by: GLSAMaker <[e-mail]>
    Signed-off-by: John Helmert III <[e-mail]>

 glsa-202208-17.xml | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

[Comment 4 John Helmert III 2022-08-10 22:36:02 UTC]

GLSA released, all done!