Input validation error in busybox (Alpine package)



Published: 2015-03-20
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2014-9645
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
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busybox (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33083

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-9645

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

busybox (Alpine package): 1.19.4-r0 - 1.22.1-r14

External links

http://git.alpinelinux.org/aports/commit/?id=124a4339b2e307db023572e5c771b425b7aebe86


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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