CVE-2016-6664

HIGH

CVSS Score

Published: December 13, 2016 at 09:00 PM UTC

Updated: June 17, 2026 at 12:51 AM UTC

4 products affected across 3 vendorsMySQL ServerMariaDBPercona Server

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Severity

HIGH7

Exploit prediction

EPSS 3%

Description

mysqld_safe in Oracle MySQL through 5.5.51, 5.6.x through 5.6.32, and 5.7.x through 5.7.14; MariaDB; Percona Server before 5.5.51-38.2, 5.6.x before 5.6.32-78-1, and 5.7.x before 5.7.14-8; and Percona XtraDB Cluster before 5.5.41-37.0, 5.6.x before 5.6.32-25.17, and 5.7.x before 5.7.14-26.17, when using file-based logging, allows local users with access to the mysql account to gain root privileges via a symlink attack on error logs and possibly other files.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MariaDB · Mariadbnpm

95%

10.0.0 ≤ v < 10.0.2910.1.0 ≤ v < 10.1.215.5.0 ≤ v < 5.5.54

Affected range stops below 10.0.29, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.1.21, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.5.54, so it looks safe — our inference, not a vendor statement

MySQL Server · Oraclenpm

95%

5.5.0 ≤ v ≤ 5.5.515.6.0 ≤ v ≤ 5.6.325.7.0 ≤ v ≤ 5.7.14

Percona Server · Percona

95%

5.5 ≤ v < 5.5.51-38.25.6 ≤ v < 5.6.32-78.15.7 ≤ v < 5.7.14-8

Affected range stops below 5.5.51-38.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.32-78.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.14-8, so it looks safe — our inference, not a vendor statement

Xtradb Cluster · Percona

95%

5.5 ≤ v < 5.5.41-37.05.6 ≤ v < 5.6.32-25.175.7 ≤ v < 5.7.14-26.17

Affected range stops below 5.5.41-37.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.32-25.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.14-26.17, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (15)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

http://legalhackers.com/advisories/MySQL-Maria-Percona-RootPrivEsc-CVE-2016-6664-5617-Exploit.html

x_refsource_MISCExploitThird Party AdvisoryVDB Entry

Source: [email protected]

http://packetstormsecurity.com/files/139491/MySQL-MariaDB-PerconaDB-Root-Privilege-Escalation.html

Vendor Advisoryx_refsource_REDHATThird Party Advisory

Source: [email protected]

http://rhn.redhat.com/errata/RHSA-2016-2130.html

Vendor Advisoryx_refsource_REDHATThird Party Advisory

Source: [email protected]

http://rhn.redhat.com/errata/RHSA-2016-2749.html

Mailing Listx_refsource_FULLDISCThird Party Advisory

Source: [email protected]

http://seclists.org/fulldisclosure/2016/Nov/4

Vendor Advisoryx_refsource_DEBIANThird Party Advisory

Source: [email protected]

http://www.debian.org/security/2017/dsa-3770

x_refsource_CONFIRMPatchVendor Advisory

Source: [email protected]

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

Mailing Listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry

Source: [email protected]

http://www.securityfocus.com/archive/1/539695/100/0/threaded

CVSS

7HIGH[email protected]

Attack Vector: LOCAL
Complexity: HIGH
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-59

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