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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.1038
               systemd-journald vulnerability CVE-2019-3815
                               24 March 2020

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           BIG-IP
Publisher:         F5 Networks
Operating System:  Red Hat
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3815 CVE-2018-16864 

Reference:         ESB-2019.0249

Original Bulletin: 
   https://support.f5.com/csp/article/K22040951

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K22040951:systemd-journald vulnerability CVE-2019-3815

Security Advisory

Original Publication Date: 24 Mar, 2020

Security Advisory Description

A memory leak was discovered in the backport of fixes for CVE-2018-16864 in Red
Hat Enterprise Linux. Function dispatch_message_real() in journald-server.c
does not free the memory allocated by set_iovec_field_free() to store the
`_CMDLINE=` entry. A local attacker may use this flaw to make systemd-journald
crash. This issue only affects versions shipped with Red Hat Enterprise since
v219-62.2. (CVE-2019-3815)

Impact

A local attacker may be able to cause excessive resource consumption on the
BIG-IP system, potentially leading to a failover event.

Security Advisory Status

F5 Product Development has assigned ID 887637 (BIG-IP) to this vulnerability.

To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if your
release is known to be vulnerable, the components or features that are affected
by the vulnerability, and for information about releases, point releases, or
hotfixes that address the vulnerability, refer to the following table. For more
information about security advisory versioning, refer to K51812227:
Understanding Security Advisory versioning.

+-------------------+------+----------+----------+----------+------+----------+
|                   |      |Versions  |Fixes     |          |CVSSv3|Vulnerable|
|Product            |Branch|known to  |introduced|Severity  |score^|component |
|                   |      |be        |in        |          |1     |or feature|
|                   |      |vulnerable|          |          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |15.x  |15.1.0    |None      |          |      |          |
|                   +------+----------+----------+          |      |          |
|                   |14.x  |14.1.2.1 -|None      |          |      |          |
|                   |      |14.1.2.3  |          |          |      |          |
|BIG-IP (LTM, AAM,  +------+----------+----------+          |      |          |
|AFM, Analytics,    |13.x  |None      |Not       |          |      |          |
|APM, ASM, DNS, FPS,|      |          |applicable|Low       |3.3   |Linux OS  |
|GTM, Link          +------+----------+----------+          |      |          |
|Controller, PEM)   |12.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|                   +------+----------+----------+          |      |          |
|                   |11.x  |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|                   |7.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
|                   +------+----------+----------+          |      |          |
|BIG-IQ Centralized |6.x   |None      |Not       |Not       |None  |None      |
|Management         |      |          |applicable|vulnerable|      |          |
|                   +------+----------+----------+          |      |          |
|                   |5.x   |None      |Not       |          |      |          |
|                   |      |          |applicable|          |      |          |
+-------------------+------+----------+----------+----------+------+----------+
|Traffix SDC        |5.x   |None      |Not       |Not       |None  |None      |
|                   |      |          |applicable|vulnerable|      |          |
+-------------------+------+----------+----------+----------+------+----------+

^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.

Security Advisory Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Fixes introduced in column. If the table lists only an older version
than what you are currently running, or does not list a non-vulnerable version,
then no upgrade candidate currently exists.

Mitigation

None

Supplemental Information

o K51812227: Understanding Security Advisory versioning
  o K41942608: Overview of Security Advisory articles
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K9502: BIG-IP hotfix and point release matrix
  o K13123: Managing BIG-IP product hotfixes (11.x - 15.x)
  o K167: Downloading software and firmware from F5
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents

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