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Fencer Intel
medium 5.9

CVE-2020-2804 json

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Memcached).

published 6y ago modified 4mo ago also EUVD-2020-22597

cvss
5.9
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Memcached). Supported versions that are affected are 5.6.47 and prior, 5.7.29 and prior and 8.0.19 and prior. Difficult to exploit vulnerability allows unauthenticated 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Patch / fix

  • mysql-5.7 Ubuntu 16.04 LTS 5.7.30-0ubuntu0.16.04.1
  • mysql-5.7 Ubuntu 18.04 LTS 5.7.30-0ubuntu0.18.04.1
  • mysql-8.0 Ubuntu 20.04 LTS 8.0.20-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2020-2804

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

  • mecab RHEL 8, RHEL 8.1 EUS, RHEL 8.0 E4S 0.996-1.module+el8.0.0+3898+e09bb8de.9
  • mysql RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494
  • mysql-libs RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494
  • mysql-test RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494
  • mecab-ipadic RHEL 8, RHEL 8.1 EUS, RHEL 8.0 E4S 2.7.0.20070801-16.module+el8.0.0+3898+e09bb8de
  • mysql-common RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494
  • mysql-errmsg RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494
  • mysql-server RHEL 8 8.0.21-1.module+el8.2.0+7855+47abd494

red hat advisories RHSA-2020:3732RHSA-2020:3518RHSA-2020:3757RHSA-2020:3755

  • mecab AlmaLinux 8 0.996-1.module_el8.4.0+2532+b8928c02.9
  • mecab AlmaLinux 8 0.996-1.module_el8.5.0+33+8bc5f36a.9
  • mecab-ipadic AlmaLinux 8 2.7.0.20070801-16.module_el8.5.0+33+8bc5f36a
  • mecab-ipadic AlmaLinux 8 2.7.0.20070801-16.module_el8.4.0+2532+b8928c02
  • mecab-ipadic-EUCJP AlmaLinux 8 2.7.0.20070801-16.module_el8.5.0+33+8bc5f36a
  • mecab-ipadic-EUCJP AlmaLinux 8 2.7.0.20070801-16.module_el8.4.0+2532+b8928c02

almalinux advisories ALSA-2020:3732

  • mecab Rocky Linux 8 0.996-1.module+el8.3.0+242+87d3366a.9
  • mysql Rocky Linux 8 8.0.21-1.module+el8.3.0+242+87d3366a
  • mecab-ipadic Rocky Linux 8 2.7.0.20070801-16.module+el8.3.0+242+87d3366a

rocky linux advisories RLSA-2020:3732

Is CVE-2020-2804 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2020-2804 updated cvss 5.9

mysql: Server: Memcached unspecified vulnerability (CPU Apr 2020)

  • Red Hat OpenStack Platform 10 (Newton) mariadb-galera, mariadb-galera-common, mariadb-galera-server
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) mysql 8.0.21-1.module+el8.2.0+7855+47abd494, mecab 0.996-1.module+el8.0.0+3898+e09bb8de.9, mysql-libs 8.0.21-1.module+el8.2.0+7855+47abd494, mysql-test 8.0.21-1.module+el8.2.0+7855+47abd494, mysql-common 8.0.21-1.module+el8.2.0+7855+47abd494, mysql-errmsg 8.0.21-1.module+el8.2.0+7855+47abd494, +3 more
    fixed: vendor fix RHSA-2020:3732
  • Red Hat Enterprise Linux AppStream E4S (v. 8.0) mysql 8.0.21-1.module+el8.0.0+7853+3a2b0b25, mecab 0.996-1.module+el8.0.0+3898+e09bb8de.9, mysql-libs 8.0.21-1.module+el8.0.0+7853+3a2b0b25, mysql-test 8.0.21-1.module+el8.0.0+7853+3a2b0b25, mysql-common 8.0.21-1.module+el8.0.0+7853+3a2b0b25, mysql-errmsg 8.0.21-1.module+el8.0.0+7853+3a2b0b25, +3 more
    fixed: vendor fix RHSA-2020:3755
  • Red Hat Enterprise Linux AppStream EUS (v. 8.1) mysql 8.0.21-1.module+el8.1.0+7854+62e1520f, mecab 0.996-1.module+el8.0.0+3898+e09bb8de.9, mysql-libs 8.0.21-1.module+el8.1.0+7854+62e1520f, mysql-test 8.0.21-1.module+el8.1.0+7854+62e1520f, mysql-common 8.0.21-1.module+el8.1.0+7854+62e1520f, mysql-errmsg 8.0.21-1.module+el8.1.0+7854+62e1520f, +3 more
    fixed: vendor fix RHSA-2020:3757
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-mysql80-mysql 8.0.21-1.el7, rh-mysql80-mysql-test 8.0.21-1.el7, rh-mysql80-mysql-common 8.0.21-1.el7, rh-mysql80-mysql-config 8.0.21-1.el7, rh-mysql80-mysql-errmsg 8.0.21-1.el7, rh-mysql80-mysql-server 8.0.21-1.el7, +3 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-mysql80-mysql 8.0.21-1.el7, rh-mysql80-mysql-test 8.0.21-1.el7, rh-mysql80-mysql-common 8.0.21-1.el7, rh-mysql80-mysql-config 8.0.21-1.el7, rh-mysql80-mysql-errmsg 8.0.21-1.el7, rh-mysql80-mysql-server 8.0.21-1.el7, +3 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-mysql80-mysql 8.0.21-1.el7, rh-mysql80-mysql-test 8.0.21-1.el7, rh-mysql80-mysql-common 8.0.21-1.el7, rh-mysql80-mysql-config 8.0.21-1.el7, rh-mysql80-mysql-errmsg 8.0.21-1.el7, rh-mysql80-mysql-server 8.0.21-1.el7, +3 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-mysql80-mysql 8.0.21-1.el7, rh-mysql80-mysql-test 8.0.21-1.el7, rh-mysql80-mysql-common 8.0.21-1.el7, rh-mysql80-mysql-config 8.0.21-1.el7, rh-mysql80-mysql-errmsg 8.0.21-1.el7, rh-mysql80-mysql-server 8.0.21-1.el7, +3 more
    fixed: vendor fix RHSA-2020:3518
  • 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 8 Judy, galera, mariadb, mariadb-pam, mariadb-test, mariadb-backup, +8 more Red Hat OpenStack Platform 13 (Queens) mariadb, mariadb-libs, mariadb-test, mariadb-common, mariadb-config, mariadb-errmsg, +3 more Red Hat OpenStack Platform 14 (Rocky) mariadb, mariadb-libs, mariadb-test, mariadb-common, mariadb-config, mariadb-errmsg, +3 more
    +1 more products
    Red Hat Software Collections rh-mariadb102-mariadb, rh-mariadb103-mariadb, rh-mariadb102-mariadb-test, rh-mariadb103-mariadb-test, rh-mariadb102-mariadb-bench, rh-mariadb102-mariadb-backup, +31 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
2y ago

Exploit prediction

3.26% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • Oracle Corporation MySQL Server

Classification

Technology feeds

References

Sources

Fencer Intel 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.