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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.0868.2
glibc vulnerabilities
14 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2021-3326 CVE-2020-29573 CVE-2019-25013
Reference: ESB-2021.0743
ESB-2021.0373
Original Bulletin:
https://support.f5.com/csp/article/K68251873
https://support.f5.com/csp/article/K27238230
https://support.f5.com/csp/article/K44945790
Revision History: September 14 2021: Vendor updated versions known to be vulnerable
March 11 2021: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K68251873: glibc vulnerability CVE-2019-25013
Original Publication Date: 11 Mar, 2021
Latest Publication Date: 13 Sep, 2021
Security Advisory Description
The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when
processing invalid multi-byte input sequences in the EUC-KR encoding, may have
a buffer over-read. (CVE-2019-25013)
Impact
A buffer over-read may lead to segmentation fault, causing system processes to
stop responding and restart. The highest threat from this vulnerability is to
system availability.
Security Advisory Status
F5 Product Development has assigned ID 988589 (BIG-IP), ID 991609 (BIG-IQ), and
ID 1000453 (F5OS) 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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |16.x |16.0.0 - |None | | | |
| | |16.1.0 | | | | |
| +------+----------+----------+ | | |
| |15.x |15.1.0 - |None | | | |
| | |15.1.3 | | | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|Advanced WAF, AFM, |14.x |14.1.0 - |None | | | |
|Analytics, APM, | |14.1.4 | | | | |
|ASM, DDHD, DNS, +------+----------+----------+Medium |4.8 |glibc |
|FPS, GTM, Link |13.x |13.1.0 - |None | | | |
|Controller, PEM, | |13.1.4 | | | | |
|SSLO) +------+----------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.6.1 - |None | | | |
| | |11.6.5 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |8.x |8.0.0 |None | | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |7.x |7.0.0 - |None | | | |
|Management | |7.1.0 | |Medium |4.8 |glibc |
| +------+----------+----------+ | | |
| |6.x |6.0.0 - |None | | | |
| | |6.1.0 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
|F5OS |1.x |1.0.0 - |None |Medium |4.8 |glibc |
| | |1.1.4 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
|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.
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
table).
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.
Mitigation
To mitigate this vulnerability for affected F5 products, you should permit
management access to F5 products only over a secure network and limit shell
access to only trusted users. For more information about securing access to
BIG-IP and BIG-IQ systems, refer to K13309: Restricting access to the
Configuration utility by source IP address (11.x - 16.x) and K13092: Overview
of securing access to the BIG-IP system.
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 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 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
- --------------------------------------------------------------------------------
K27238230: glibc vulnerability CVE-2020-29573
Original Publication Date: 11 Mar, 2021
Latest Publication Date: 13 Sep, 2021
Security Advisory Description
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23
on x86 targets has a stack-based buffer overflow if the input to any of the
printf family of functions is an 80-bit long double with a non-canonical bit
pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value
to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later
(i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math
functions through use of GCC built-ins. In other words, the reference to 2.23
is intentional despite the mention of "Fixed for glibc 2.33" in the 26649
reference. (CVE-2020-29573)
Impact
Specially crafted values passed to certain glibc functions may create a
stack-based overflow, potentially leading to an unexpected process restart.
Security Advisory Status
F5 Product Development has assigned ID 988549 (BIG-IP), ID 989405 (BIG-IQ), and
ID 989461 (F5OS) 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 be |introduced|Severity |score^|component or |
| | |vulnerable |in | |1 |feature |
+-------------+------+-------------+----------+----------+------+-------------+
| |16.x |16.0.0 - |None | | | |
| | |16.1.0 | | | | |
| +------+-------------+----------+ | | |
| |15.x |15.1.0 - |None | | | |
| | |15.1.3 | | | | |
| +------+-------------+----------+ | | |
| |14.x |14.1.0 - |None | | | |
|BIG-IP (all | |14.1.4 | | | | |
|modules) +------+-------------+----------+High |7.5 |glibc |
| |13.x |13.1.0 - |None | | | |
| | |13.1.4 | | | | |
| +------+-------------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.6 | | | | |
| +------+-------------+----------+ | | |
| |11.x |11.6.1 - |None | | | |
| | |11.6.5 | | | | |
+-------------+------+-------------+----------+----------+------+-------------+
| |8.x |8.0.0 |None | | | |
|BIG-IQ +------+-------------+----------+ | | |
|Centralized |7.x |7.0.0 - 7.1.0|None |High |7.5 |glibc |
|Management +------+-------------+----------+ | | |
| |6.x |6.0.0 - 6.1.0|None | | | |
+-------------+------+-------------+----------+----------+------+-------------+
|F5OS |1.x |1.0.0 - 1.1.4|None |High |7.5 |glibc |
+-------------+------+-------------+----------+----------+------+-------------+
|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.
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
table).
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.
Mitigation
To mitigate this vulnerability for affected F5 products, you should permit
management access only to F5 products over a secure network and limit shell
access to trusted users. For more information about securing access to BIG-IP
and BIG-IQ systems, refer to K13309: Restricting access to the Configuration
utility by source IP address (11.x - 16.x) and K13092: Overview of securing
access to the BIG-IP system.
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 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 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
- --------------------------------------------------------------------------------
K44945790: glibc vulnerability CVE-2021-3326
Original Publication Date: 11 Mar, 2021
Security Advisory Description
The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier,
when processing invalid input sequences in the ISO-2022-JP-3 encoding, fails an
assertion in the code path and aborts the program, potentially resulting in a
denial of service. (CVE-2021-3326)
Impact
An attacker can exploit this vulnerability by crafting a sequence of characters
to an application using the iconv function and cause the application to be
terminated abnormally.
Security Advisory Status
F5 Product Development has assigned ID 999613 (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| | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |16.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |15.x |None |Not | | | |
| | | |applicable| | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|Advanced WAF, AFM, |14.x |None |Not | | | |
|Analytics, APM, | | |applicable| | | |
|ASM, DDHD, DNS, +------+----------+----------+High |7.5 |glibc |
|FPS, GTM, Link |13.x |13.1.0 - |None | | | |
|Controller, PEM, | |13.1.3 | | | | |
|SSLO) +------+----------+----------+ | | |
| |12.x |12.1.0 - |None | | | |
| | |12.1.5 | | | | |
| +------+----------+----------+ | | |
| |11.x |11.6.1 - |None | | | |
| | |11.6.5 | | | | |
+-------------------+------+----------+----------+----------+------+----------+
| |8.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IQ Centralized |7.x |None |Not |Not |None |None |
|Management | | |applicable|vulnerable| | |
| +------+----------+----------+ | | |
| |6.x |None |Not | | | |
| | | |applicable| | | |
+-------------------+------+----------+----------+----------+------+----------+
|F5OS |1.x |None |Not |Not |None |None |
| | | |applicable|vulnerable| | |
+-------------------+------+----------+----------+----------+------+----------+
|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.
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 that you upgrade to a version with the fix (refer to
the table).
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.
Mitigation
None
To reduce the impact of this vulnerability, permit management access to F5
products only over a secure network, and limit access to only trusted users.
For more information about securing access to BIG-IP systems, refer to K13309:
Restricting access to the Configuration utility by source IP address (11.x -
16.x) and K13092: Overview of securing access to the BIG-IP system.
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 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
- --------------------------END INCLUDED TEXT--------------------
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