Resource management error in busybox.net BusyBox

1) Resource management error

EUVDB-ID: #VU31448

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-6301

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.

Mitigation

Install update from vendor's website.

Vulnerable software versions

BusyBox: 1.20.0 - 1.25.0

CPE2.3

• cpe:2.3:a:busybox_net:busybox:1.20.0:*:*:*:*:*:*:*
• cpe:2.3:a:busybox_net:busybox:1.20.1:*:*:*:*:*:*:*
• cpe:2.3:a:busybox_net:busybox:1.20.2:*:*:*:*:*:*:*

External links

https://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
https://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
https://seclists.org/fulldisclosure/2019/Jun/18
https://seclists.org/fulldisclosure/2019/Sep/7
https://seclists.org/fulldisclosure/2020/Mar/15
https://www.openwall.com/lists/oss-security/2016/08/03/7
https://www.securityfocus.com/bid/92277
https://bugzilla.redhat.com/show_bug.cgi?id=1363710
https://git.busybox.net/busybox/commit/?id=150dc7a2b483b8338a3e185c478b4b23ee884e71
https://seclists.org/bugtraq/2019/Jun/14
https://seclists.org/bugtraq/2019/Sep/7
https://security.gentoo.org/glsa/201701-05

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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