Input validation error in www.zeromq zeromq

1) Input validation error

EUVDB-ID: #VU32198

Risk: Medium

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

CVE-ID: CVE-2014-9721

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

libzmq before 4.0.6 and 4.1.x before 4.1.1 allows remote attackers to conduct downgrade attacks and bypass ZMTP v3 protocol security mechanisms via a ZMTP v2 or earlier header.

Mitigation

Install update from vendor's website.

Vulnerable software versions

zeromq: 4.0.6 - 4.3.2

External links

http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159176.html
http://lists.opensuse.org/opensuse-updates/2015-06/msg00018.html
http://www.debian.org/security/2015/dsa-3255
http://github.com/zeromq/libzmq/issues/1273
http://github.com/zeromq/zeromq4-x/commit/b6e3e0f601e2c1ec1f3aac880ed6a3fe63043e51

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.