Remote code execution in Mikrotik RouterOS RADVD

1) Out-of-bounds write

EUVDB-ID: #VU76283

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-32154

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the Router Advertisement Daemon. A remote attacker on the local network can send specially crafted packets to the device, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

MikroTik RouterOS: 6.0 - 7.9

CPE2.3

• cpe:2.3:h:mikrotik:mikrotik_routeros:6.0:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.1:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.2:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.3:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.4:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.5:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.6:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.7:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.9:*:*:*:*:*:*:*
• cpe:2.3:h:mikrotik:mikrotik_routeros:6.10:*:*:*:*:*:*:*

External links

https://www.zerodayinitiative.com/advisories/ZDI-23-710/

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).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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