Bug 1386557 (CVE-2016-5584) - CVE-2016-5584 mysql: unspecified vulnerability in subcomponent: Server: Security: Encryption (CPU October 2016)
Summary: CVE-2016-5584 mysql: unspecified vulnerability in subcomponent: Server: Secur...
Status: CLOSED NOTABUG
Alias: CVE-2016-5584
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20161019,repor...
Keywords: Security
Depends On:
Blocks: 1386598
TreeView+ depends on / blocked
 
Reported: 2016-10-19 08:59 UTC by Adam Mariš
Modified: 2019-06-08 21:31 UTC (History)
29 users (show)

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Clone Of:
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Last Closed: 2016-10-21 06:52:26 UTC


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Description Adam Mariš 2016-10-19 08:59:57 UTC
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Encryption). Supported versions that are affected are 5.5.52 and earlier, 5.6.33 and earlier and  5.7.15 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 access to critical data or complete access to all MySQL Server accessible data. 

External References:

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881724.html#AppendixMSQL

Comment 1 Adam Mariš 2016-10-19 09:48:50 UTC
Created mariadb tracking bugs for this issue:

Affects: fedora-all [bug 1386608]

Comment 2 Adam Mariš 2016-10-19 09:49:06 UTC
Created community-mysql tracking bugs for this issue:

Affects: fedora-all [bug 1386607]

Comment 3 Adam Mariš 2016-10-19 09:49:17 UTC
Created mariadb-galera tracking bugs for this issue:

Affects: fedora-all [bug 1386609]

Comment 4 Tomas Hoger 2016-10-21 06:52:26 UTC
It does not seem this CVE can be applicable to MySQL packages in Red Hat products.  According to Oracle, this problem was fixed in versions 5.5.53, 5.6.34, and 5.7.16.  Those versions include very few changes:

http://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-16.html
http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-34.html
http://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-53.html

* Default for secure_file_priv was changed, and 5.5 and 5.6 branches also got backport of checks that prevent use of unsafe secure_file_priv settings.  That change is related to the CVE-2016-6662 issue for "Server: Logging" sub-component, as listed in Oracle CPU.  CVE-2016-6662 is tracked via bug 1375198.

* Bundled yaSSL was upgrade to version 2.4.2.  That upgrade is known to fix one security issue, listed in the CPU as CVE-2016-7440 for "Server: Security: Encryption" sub-component.  Issue is tracked via bug 1386584.  As Red Hat MySQL packages do not use bundled yaSSL, they were not affected by the CVE-2016-7440 issue.

* OpenSSL bundled with MySQL Commercial Server builds was updated to newer upstream version, fixing multiple security issues.  Related entry in the CPU is:
CVE-2016-6304 for "Server: Security: Encryption" sub-component.  This change was only relevant for 5.6 and 5.7.

There were no other changes in those versions.  Given the sub-component specified for this CVE, and the fact that OpenSSL update was not relevant to 5.5, it seems this CVE is for one of the other changes brought it by the yaSSL rebase:

  yaSSL was upgraded to version 2.4.2. This upgrade corrects issues with:
  ... DSA padding for unusual sizes; the SSL_CTX_load_verify_locations()
  OpenSSL compatibility function failing to handle long path directory
  names. (Bug #24512715, Bug #24740291)

As noted above, issues in yaSSL do not affect Red Hat MySQL packages.


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