Vulnerability identifier: #VU69653

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-42377

CWE-ID: CWE-763

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BusyBox
Universal components / Libraries / Software for developers

Vendor: busybox.net

Description

The vulnerability allows a remote attacker execute arbitrary code on the system.

The vulnerability exists due to improper input validation within the hush applet. A remote attacker can pass a specially crafted input to the application and potentially execute arbitrary shell commands.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.33.0 - 1.33.1

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CPE

• cpe:2.3:a:busybox_net:busybox:1.33.1:*:*:*:*:*:*:*

External links
http://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
http://security.netapp.com/advisory/ntap-20211223-0002/

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?