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             AUSCERT External Security Bulletin Redistribution

            GNU C Library (glibc) vlunerability CVE-2016-10228
                                5 July 2021


        AusCERT Security Bulletin Summary

Product:           BIG-IP
Publisher:         F5 Networks
Operating System:  UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-10228  

Reference:         ESB-2021.2232

Original Bulletin: 

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K52494142: GNU C Library (glibc)  vlunerability CVE-2016-10228

Original Publication Date: 03 Jul, 2021

Security Advisory Description

The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier,
when invoked with multiple suffixes in the destination encoding (TRANSLATE or
IGNORE) along with the -c option, enters an infinite loop when processing
invalid multi-byte input sequences, leading to a denial of service. (


An attacker can exploit this vulnerability by crafting a sequence of invalid
multi-byte input to an application using the iconv program and causing the
application to enter an infinite loop, leading to a denial-of-service (DoS).

Security Advisory Status

F5 Product Development has assigned ID 1029013 (BIG-IP/BIG-IQ/F5OS) and
SDC-1236 (Traffix) 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.

Note: After a fix is introduced for a given minor branch, that fix applies to
all subsequent maintenance and point releases for that branch, and no
additional fixes for that branch will be listed in the table. For example, when
a fix is introduced in, the fix also applies to, and all
later 14.1.x releases (14.1.3.x., 14.1.4.x). For more information, refer to
K51812227: Understanding security advisory versioning. Additionally, software
versions preceding those listed in the following table have reached the End of
Technical Support (EoTS) phase of their lifecycle and are no longer evaluated
for security issues. For more information, refer to the Security hotfixes
section of K4602: Overview of the F5 security vulnerability response policy.

|             |      |Versions known|Fixes     |        |CVSSv3|Vulnerable    |
|Product      |Branch|to be         |introduced|Severity|score^|component or  |
|             |      |vulnerable^1  |in        |        |2     |feature       |
|             |16.x  |16.0.0 -      |Not       |        |      |              |
|             |      |16.0.1        |applicable|        |      |              |
|             +------+--------------+----------+        |      |              |
|             |15.x  |15.1.0 -      |Not       |        |      |              |
|             |      |15.1.3        |applicable|        |      |              |
|             +------+--------------+----------+        |      |              |
|             |14.x  |14.1.0 -      |Not       |        |      |              |
|BIG-IP (all  |      |14.1.4        |applicable|        |      |              |
|modules)     +------+--------------+----------+Low     |3.3   |glibc library |
|             |13.x  |13.1.0 -      |Not       |        |      |              |
|             |      |13.1.4        |applicable|        |      |              |
|             +------+--------------+----------+        |      |              |
|             |12.x  |12.1.0 -      |Not       |        |      |              |
|             |      |12.1.6        |applicable|        |      |              |
|             +------+--------------+----------+        |      |              |
|             |11.x  |11.6.1 -      |Not       |        |      |              |
|             |      |11.6.5        |applicable|        |      |              |
|             |8.x   |8.0.0 - 8.1.0 |Not       |        |      |              |
|             |      |              |applicable|        |      |              |
|BIG-IQ       +------+--------------+----------+        |      |              |
|Centralized  |7.x   |7.0.0 - 7.1.0 |Not       |Low     |3.3   |glibc library |
|Management   |      |              |applicable|        |      |              |
|             +------+--------------+----------+        |      |              |
|             |6.x   |6.0.1 - 6.1.0 |Not       |        |      |              |
|             |      |              |applicable|        |      |              |
|F5OS         |1.x   |1.1.0 - 1.1.2 |Not       |Low     |3.3   |glibc library |
|             |      |              |applicable|        |      |              |
|Traffix SDC  |5.x   |5.1.0         |Not       |Low     |3.3   |glibc library |
|             |      |              |applicable|        |      |              |

^1F5 evaluates only software versions that have not yet reached the End of
Technical Support (EoTS) phase of their lifecycle.

^2The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.

Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by installing a version listed in
the Fixes introduced in column. If the Fixes introduced in column does not list
a version for your branch, then no update candidate currently exists for that
branch and F5 recommends upgrading to a version with the fix (refer to the

If the Fixes introduced in column lists a version prior to the one you are
running, in the same branch, then your version should have the fix.



Supplemental Information

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 K8986: F5 software lifecycle policy
  o K9502: BIG-IP hotfix and point release matrix
  o K13123: Managing BIG-IP product hotfixes (11.x - 16.x)
  o K15106: Managing BIG-IQ product hotfixes
  o K15113: BIG-IQ hotfix and point release matrix
  o K48955220: Installing an OPSWAT Endpoint Security update on BIG-IP APM
    systems (11.4.x and later)
  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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