Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.
Please stabilize 21.0.8, 23.0.1.
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 188.8.131.52, 21.0.8, 22.2.4, and 23.0.1, it is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. This issue is fixed in versions 184.108.40.206, 21.0.8, 22.2.4, and 23.0.1. There are currently no known workarounds.
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 21.0.8, 22.2.4, and 23.0.1, it is possible to trick administrators into enabling "recommended" apps for the Nextcloud server that they do not need, thus expanding their attack surface unnecessarily. This issue is fixed in versions 21.0.8 , 22.2.4, and 23.0.1.
The bug has been referenced in the following commit(s):
Author: GLSAMaker <firstname.lastname@example.org>
AuthorDate: 2022-08-10 22:31:11 +0000
Commit: John Helmert III <email@example.com>
CommitDate: 2022-08-10 22:33:19 +0000
[ GLSA 202208-17 ] Nextcloud: Multiple Vulnerabilities
Signed-off-by: GLSAMaker <firstname.lastname@example.org>
Signed-off-by: John Helmert III <email@example.com>
glsa-202208-17.xml | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
GLSA released, all done!