Vulnerability identifier: #VU82690

Vulnerability risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-46604

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
ActiveMQ
Server applications / Mail servers

Vendor: Apache Foundation

Description

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

The vulnerability exists due to insecure input validation when processing serialized data in the OpenWire protocol. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ActiveMQ: 5.0.0, 5.1.0 - 5.18.2, 5.2 - 5.2.0, 5.3.0 - 5.3.2, 5.4.0 - 5.4.3, 5.5.0 - 5.5.1, 5.6.0, 5.7.0, 5.8.0, 5.9.0 - 5.9.1

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External links
http://activemq.apache.org/security-advisories.data/CVE-2023-46604-announcement.txt
http://www.openwall.com/lists/oss-security/2023/10/27/5
http://www.zerodayinitiative.com/advisories/ZDI-24-440/

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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?

Yes. This vulnerability is being exploited in the wild.