Description
The add_probe function in modutils/modprobe.c in BusyBox before 1.23.0 allows local users to bypass intended restrictions on loading kernel modules via a / (slash) character in a module name, as demonstrated by an "ifconfig /usbserial up" command or a "mount -t /snd_pcm none /" command.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu ↗
- https://bugs.busybox.net/show_bug.cgi?id=7652 ↗
- http://openwall.com/lists/oss-security/2015/01/24/4 ↗
- https://security.gentoo.org/glsa/201503-13 ↗
- http://www.securityfocus.com/bid/72324 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1185707 ↗
- https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html ↗
- http://git.busybox.net/busybox/commit/?id=4e314faa0aecb66717418e9a47a4451aec59262b ↗
- https://usn.ubuntu.com/3935-1/ ↗
- http://seclists.org/fulldisclosure/2020/Mar/15 ↗