ArchLinux: 202102-7: nextcloud: directory traversal
Summary
Tar.php in Archive_Tar through 1.4.11 allows write operations with Directory Traversal due to inadequate checking of symbolic links, a related issue to CVE-2020-28948.
Resolution
Upgrade to 20.0.6-1.
# pacman -Syu "nextcloud>=20.0.6-1"
The problem has been fixed upstream in version 20.0.6.
References
https://pear.php.net/bugs/bug.php?id=27008 https://github.com/pear/Archive_Tar/commit/cde460582ff389404b5b3ccb59374e9b389de916 https://github.com/nextcloud/3rdparty/commit/87062377878054f58d62f6b1853ed61664404de6 https://github.com/nextcloud/3rdparty/commit/4f95d388e0888c130316c2a21f160d553219ea48 https://security.archlinux.org/CVE-2020-36193
Workaround
None.