Skip to content
Fencer Vulns
medium 6.5

CVE-2018-2703 json

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server : Security : Privileges).

published 2018-01-18 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-14558

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server : Security : Privileges). Supported versions that are affected are 5.6.38 and prior and 5.7.20 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).

Patch / fix

  • mysql-5.7 Ubuntu 16.04 LTS 5.7.21-0ubuntu0.16.04.1
  • mysql-5.7 Ubuntu 18.04 LTS 5.7.21-1ubuntu1

ubuntu advisories UBUNTU-CVE-2018-2703

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rh-mysql57-mysql RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el6.1
  • rh-mysql57-mysql RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el7.1
  • rh-mysql57-mysql-test RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el6.1
  • rh-mysql57-mysql-test RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el7.1
  • rh-mysql57-mysql-common RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el6.1
  • rh-mysql57-mysql-common RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el7.1
  • rh-mysql57-mysql-config RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el6.1
  • rh-mysql57-mysql-config RHEL 3 SOFTWARE_COLLECTIONS 5.7.21-2.el7.1

red hat advisories RHSA-2018:0586RHSA-2018:0587

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-2703 updated cvss 6.5

mysql: sha256_password authentication DoS via hash with large rounds value

  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-mysql56-mysql 5.6.39-1.el6.1, rh-mysql57-mysql 5.7.21-2.el6.1, rh-mysql56-mysql-test 5.6.39-1.el6.1, rh-mysql57-mysql-test 5.7.21-2.el6.1, rh-mysql56-mysql-bench 5.6.39-1.el6.1, rh-mysql56-mysql-common 5.6.39-1.el6.1, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-mysql56-mysql 5.6.39-1.el7.1, rh-mysql57-mysql 5.7.21-2.el7.1, rh-mysql56-mysql-test 5.6.39-1.el7.1, rh-mysql57-mysql-test 5.7.21-2.el7.1, rh-mysql56-mysql-bench 5.6.39-1.el7.1, rh-mysql56-mysql-common 5.6.39-1.el7.1, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) rh-mysql56-mysql 5.6.39-1.el6.1, rh-mysql57-mysql 5.7.21-2.el6.1, rh-mysql56-mysql-test 5.6.39-1.el6.1, rh-mysql57-mysql-test 5.7.21-2.el6.1, rh-mysql56-mysql-bench 5.6.39-1.el6.1, rh-mysql56-mysql-common 5.6.39-1.el6.1, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) rh-mysql56-mysql 5.6.39-1.el7.1, rh-mysql57-mysql 5.7.21-2.el7.1, rh-mysql56-mysql-test 5.6.39-1.el7.1, rh-mysql57-mysql-test 5.7.21-2.el7.1, rh-mysql56-mysql-bench 5.6.39-1.el7.1, rh-mysql56-mysql-common 5.6.39-1.el7.1, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-mysql56-mysql 5.6.39-1.el7.1, rh-mysql57-mysql 5.7.21-2.el7.1, rh-mysql56-mysql-test 5.6.39-1.el7.1, rh-mysql57-mysql-test 5.7.21-2.el7.1, rh-mysql56-mysql-bench 5.6.39-1.el7.1, rh-mysql56-mysql-common 5.6.39-1.el7.1, +7 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-mysql56-mysql 5.6.39-1.el6.1, rh-mysql57-mysql 5.7.21-2.el6.1, rh-mysql56-mysql-test 5.6.39-1.el6.1, rh-mysql57-mysql-test 5.7.21-2.el6.1, rh-mysql56-mysql-bench 5.6.39-1.el6.1, rh-mysql56-mysql-common 5.6.39-1.el6.1, +7 more
    +1 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-mysql56-mysql 5.6.39-1.el7.1, rh-mysql57-mysql 5.7.21-2.el7.1, rh-mysql56-mysql-test 5.6.39-1.el7.1, rh-mysql57-mysql-test 5.7.21-2.el7.1, rh-mysql56-mysql-bench 5.6.39-1.el7.1, rh-mysql56-mysql-common 5.6.39-1.el7.1, +7 more
    fixed: vendor fix RHSA-2018:0587
  • Red Hat Enterprise Linux 5 mysql55-mysql Red Hat Enterprise Linux 6 mysql, mysql-libs, mysql-test, mysql-bench, mysql-server, mysql-embedded Red Hat Enterprise Linux 7 mariadb, mariadb-libs, mariadb-test, mariadb-bench, mariadb-server, mariadb-embedded Red Hat Enterprise Linux OpenStack Platform 6 (Juno) mariadb-galera Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) mariadb-galera, mariadb-galera-common, mariadb-galera-server Red Hat OpenStack Platform 8 (Liberty) mariadb-galera, mariadb-galera-common, mariadb-galera-server
    +5 more products
    Red Hat OpenStack Platform 9 (Mitaka) mariadb-galera, mariadb-galera-common, mariadb-galera-server Red Hat OpenStack Platform 10 (Newton) mariadb-galera, mariadb-galera-common, mariadb-galera-server Red Hat OpenStack Platform 11 (Ocata) mariadb-galera Red Hat OpenStack Platform 12 (Pike) mariadb-galera-common, mariadb-galera-server Red Hat Software Collections rh-mariadb100-mariadb, rh-mariadb101-mariadb, rh-mariadb102-mariadb, rh-mariadb100-mariadb-test, rh-mariadb101-mariadb-test, rh-mariadb102-mariadb-test, +30 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

3.18% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 6.8 AV:N/AC:L/Au:S/C:N/I:N/A:C

Affected products

  • Oracle Corporation MySQL Server

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.