Improper access control - CVE-2019-2740

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Main Vulnerability Database Vulnerabilities #VU33431

Improper access control - CVE-2019-2740

Published: July 24, 2019 / Updated: August 4, 2020


Vulnerability identifier: #VU33431
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-2740
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: XML). Supported versions that are affected are 5.6.44 and prior, 5.7.26 and prior and 8.0.16 and prior. Easily exploitable vulnerability allows low 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 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).


Affected software

Amazon Linux AMI
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Slackware Linux
Opensuse
Fedora
MySQL Server
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
mariadb (Alpine package)
rh-mariadb102-mariadb (Red Hat package)
rh-mariadb102-galera (Red Hat package)
mariadb (Red Hat package)
rh-mariadb103-mariadb (Red Hat package)
mariadb
rh-mariadb103-galera (Red Hat package)

How to mitigate CVE-2019-2740

Install update from vendor's website.

MySQL Server - addressed in versions 5.6.45, 5.7.27, 8.0.17
mariadb (Alpine package) - addressed in versions 10.1.41-r0, 10.2.26-r0
rh-mariadb102-mariadb (Red Hat package) - addressed in versions 10.2.33-1.el6, 10.2.33-1.el7
rh-mariadb102-galera (Red Hat package) - addressed in versions 25.3.29-1.el6, 25.3.29-1.el7
mariadb (Red Hat package) - update to 5.5.65-1.el7
rh-mariadb103-mariadb (Red Hat package) - update to 10.3.27-1.el7
mariadb - addressed in versions 10.3-2920190822121056.6c81f848, 10.3-3020190822121056.a5b0195c, 10.4-2920190823111416.6c81f848, 10.4-3020190823111416.a5b0195c
rh-mariadb103-galera (Red Hat package) - update to 25.3.31-1.el7

External References

Related Security Bulletins