Vulnerability identifier: #VU40990

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-3971

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MongoDB
Server applications / Database software

Vendor: MongoDB, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The CmdAuthenticate::_authenticateX509 function in db/commands/authentication_commands.cpp in mongod in MongoDB 2.6.x before 2.6.2 allows remote attackers to cause a denial of service (daemon crash) by attempting authentication with an invalid X.509 client certificate.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MongoDB: 2.6.0 - 2.6.1

---

External links
http://github.com/mongodb/mongo/commit/c151e0660b9736fe66b224f1129a16871165251b
http://jira.mongodb.org/browse/SERVER-13753

---

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.