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AUSCERT External Security Bulletin Redistribution
ESB-2018.3205.2
K15526101: Linux kernel vulnerability CVE-2017-8824
13 February 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Root Compromise -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-8824
Reference: ESB-2018.1971
ESB-2018.1410
ESB-2018.1281
ESB-2018.0057
ESB-2018.0012
ESB-2017.3259
Original Bulletin:
https://support.f5.com/csp/article/K15526101
Revision History: February 13 2020: Vendor updated product table listing vulnerable and fixed versions
October 22 2018: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K15526101:Linux kernel vulnerability CVE-2017-8824
Security Advisory
Original Publication Date: 09 May, 2018
Latest Publication Date: 11 Feb, 2020
Security Advisory Description
The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through
4.14.3 allows local users to gain privileges or cause a denial of service
(use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN
state. (CVE-2017-8824)
Impact
An attacker may exploit this vulnerability to gain privileges.
Security Advisory Status
F5 Product Development has assigned ID 712876 (BIG-IP), ID 713060 (Enterprise
Manager), and ID 713061 (BIG-IQ and F5 iWorkflow) to this vulnerability.
Additionally, F5 iHealth may list Heuristic H15526101 on the Diagnostics >
Identified > Medium page.
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.
+------------------+------+----------+----------+-----------+------+----------+
| | |Versions |Fixes | |CVSSv3|Vulnerable|
|Product |Branch|known to |introduced|Severity |score^|component |
| | |be |in | |1 |or feature|
| | |vulnerable| | | | |
+------------------+------+----------+----------+-----------+------+----------+
| |14.x |14.0.0 |14.1.0 | | | |
| | | |14.0.1.1 | | | |
|BIG-IP (LTM, AAM, +------+----------+----------+ | | |
|AFM, Analytics, |13.x |13.0.0 - |13.1.1.2 | | | |
|APM, ASM, DNS, | |13.1.1 | | | |Linux |
|Edge Gateway, FPS,+------+----------+----------+Medium |6.7 |kernel |
|GTM, Link |12.x |12.1.0 - |12.1.5.1 | | | |
|Controller, PEM, | |12.1.5 | | | | |
|WebAccelerator) +------+----------+----------+ | | |
| |11.x |11.2.1 - |11.6.5.1 | | | |
| | |11.6.5 | | | | |
+------------------+------+----------+----------+-----------+------+----------+
| | | |Not |Not | | |
|ARX |6.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+------------------+------+----------+----------+-----------+------+----------+
|Enterprise Manager|3.x |3.1.1 |None^3 |Medium |6.7 |Linux |
| | | | | | |kernel |
+------------------+------+----------+----------+-----------+------+----------+
| |7.x |7.0.0 |None | | | |
| +------+----------+----------+ | | |
| |6.x |6.0.0 - |None | | | |
|BIG-IQ Centralized| |6.1.0 | | | |Linux |
|Management +------+----------+----------+Medium |6.7 |kernel |
| |5.x |5.0.0 - |None | | | |
| | |5.4.0 | | | | |
| +------+----------+----------+ | | |
| |4.x |4.6.0 |None^3 | | | |
+------------------+------+----------+----------+-----------+------+----------+
|BIG-IQ Cloud and |1.x |1.0.0 |None^3 |Medium |6.7 |Linux |
|Orchestration | | | | | |kernel |
+------------------+------+----------+----------+-----------+------+----------+
|F5 iWorkflow |2.x |2.0.2 - |None^3 |Medium |6.7 |Linux |
| | |2.3.0 | | | |kernel |
+------------------+------+----------+----------+-----------+------+----------+
| | | |Not |Not | | |
|LineRate |2.x |None |applicable|vulnerable^|None |None |
| | | | |2 | | |
+------------------+------+----------+----------+-----------+------+----------+
| |5.x |None |Not | | | |
| | | |applicable|Not | | |
|Traffix SDC +------+----------+----------+vulnerable^|None |None |
| |4.x |None |Not |2 | | |
| | | |applicable| | | |
+------------------+------+----------+----------+-----------+------+----------+
^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.
^2The specified products contain the affected code. However, F5 identifies the
vulnerability status as Not vulnerable because the attacker cannot exploit the
code in default, standard, or recommended configurations.
^3These products and versions have reached End of Life (EoL).
F5 will not develop a fix for vulnerable products that do not already have a
fixed version listed in this article and will not update this table with
subsequent vulnerable releases in the associated branches. F5 recommends that
you update to more recent, non-vulnerable versions whenever feasible. For more
information, refer to K4602: Overview of the F5 security vulnerability response
policy.
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 K4918: Overview of the F5 critical issue hotfix policy
o K9502: BIG-IP 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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