Input validation error in busybox (Alpine package)

1) Input validation error

EUVDB-ID: #VU21420

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-16275

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the affected software allows an incorrect indication of disconnection in certain situations because source address validation is mishandled. A remote attacker in radio range of the access point can send a specially crafted 802.11 frame and cause a denial of service condition on target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

busybox (Alpine package): 1.31.1-r16 - 1.31.1-r21

busybox (Alpine package):

CPE2.3

• cpe:2.3:a:alpine:busybox_alpine_package:1.31.1-r16:*:*:*:*:alpine_linux:*:3.12
• cpe:2.3:a:alpine:busybox_alpine_package:1.31.1-r17:*:*:*:*:alpine_linux:*:3.12
• cpe:2.3:a:alpine:busybox_alpine_package:1.31.1-r18:*:*:*:*:alpine_linux:*:3.12
• cpe:2.3:a:alpine:busybox_alpine_package::*:*:*:*:alpine_linux:*:*

External links

https://git.alpinelinux.org/aports/commit/?id=76077dfdd8d77220a469c5743b7b7fd3484300a1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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