Vulnerability identifier: #VU69651

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-42373

CWE-ID: CWE-476

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 to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the man applet when a section name is supplied but no page argument is given. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.0.0 - 1.33.1

---

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/

---

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?