#VU24218 Input validation error in RabbitMQ - CVE-2019-11287

Vulnerability identifier: #VU24218

Vulnerability 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-2019-11287

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RabbitMQ
Client/Desktop applications / Messaging software

Vendor: VMware, Inc

Description

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

The vulnerability exists due to insufficient validation of user-supplied input passed via the "X-Reason" HTTP Header. A remote attacker can inject a malicious Erlang format string into the "X-Reason" HTTP Header that once expanded will consume the heap, resulting in the server crashing.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

RabbitMQ: 3.7.0 - 3.8.0

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External links
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EEQ6O7PMNJKYFMQYHAB55L423GYK63SO/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYTGR3D5FW2O25RXZOTIZMOD2HAUVBE4/
https://pivotal.io/security/cve-2019-11287

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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?

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