Vulnerability identifier: #VU24218

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

---

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

---

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.