Bug#931234: glib2.0: CVE-2019-13012: keyfile settings backend: Consider tightening permissions

[Salvatore Bonaccorso]

Source: glib2.0
Version: 2.58.3-2
Severity: important
Tags: security upstream fixed-upstream
Forwarded: https://gitlab.gnome.org/GNOME/glib/issues/1658

Hi,

The following vulnerability was published for glib2.0.

CVE-2019-13012[0]:
| The keyfile settings backend in GNOME GLib (aka glib2.0) before 2.59.1
| creates directories using g_file_make_directory_with_parents
| (kfsb->dir, NULL, NULL) and files using g_file_replace_contents
| (kfsb->file, contents, length, NULL, FALSE,
| G_FILE_CREATE_REPLACE_DESTINATION, NULL, NULL, NULL). Consequently, it
| does not properly restrict directory (and file) permissions. Instead,
| for directories, 0777 permissions are used; for files, default file
| permissions are used. This is similar to CVE-2019-12450.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-13012
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13012
[1] https://gitlab.gnome.org/GNOME/glib/issues/1658

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore