Input validation error in BusyBox - CVE-2014-9645
Published: March 12, 2017 / Updated: August 3, 2020
Vulnerability identifier: #VU33083
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2014-9645
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: busybox.net
Affected software:
BusyBox
BusyBox
Detailed vulnerability description
The vulnerability allows a local authenticated user to manipulate data.
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.
How to mitigate CVE-2014-9645
Install update from vendor's website.
Sources
- http://git.busybox.net/busybox/commit/?id=4e314faa0aecb66717418e9a47a4451aec59262b
- http://openwall.com/lists/oss-security/2015/01/24/4
- http://seclists.org/fulldisclosure/2020/Mar/15
- http://www.securityfocus.com/bid/72324
- https://bugs.busybox.net/show_bug.cgi?id=7652
- https://bugzilla.redhat.com/show_bug.cgi?id=1185707
- https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu
- https://security.gentoo.org/glsa/201503-13
- https://usn.ubuntu.com/3935-1/