Input validation error in MariaDB

1) Input validation error

EUVDB-ID: #VU33790

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-3243

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Charsets). Supported versions that are affected are 5.5.53 and earlier. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS v3.0 Base Score 4.4 (Availability impacts).

Mitigation

Install update from vendor's website.

Vulnerable software versions

MariaDB: 5.5.20 - 5.5.53

External links

http://www.debian.org/security/2017/dsa-3767
http://www.debian.org/security/2017/dsa-3770
http://www.oracle.com/technetwork/security-advisory/cpujan2017-2881727.html
http://www.securityfocus.com/bid/95538
http://www.securitytracker.com/id/1037640
http://access.redhat.com/errata/RHSA-2017:2192
http://access.redhat.com/errata/RHSA-2018:0279
http://access.redhat.com/errata/RHSA-2018:0574
http://security.gentoo.org/glsa/201702-17
http://security.gentoo.org/glsa/201702-18

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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