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AUSCERT External Security Bulletin Redistribution
ESB-2022.5117
K28942395: OpenSSH vulnerability CVE-2018-15473
17 October 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Traffix SDC
Publisher: F5 Networks
Operating System: Network Appliance
Resolution: None
CVE Names: CVE-2018-15473
Original Bulletin:
https://support.f5.com/csp/article/K28942395
Comment: CVSS (Max): 5.3 CVE-2018-15473 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVSS Source: F5 Networks
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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K28942395: OpenSSH vulnerability CVE-2018-15473
Original Publication Date: 28 Sep, 2018
Latest Publication Date: 14 Oct, 2022
Security Advisory Description
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not
delaying bailout for an invalid authenticating user until after the packet
containing the request has been fully parsed, related to auth2-gss.c,
auth2-hostbased.c, and auth2-pubkey.c. (CVE-2018-15473)
Impact
Traffix SDC
An attacker may exploit this vulnerability to gain access to the affected
system.
BIG-IP, Enterprise Manager, BIG-IQ, F5OS-A, F5OS-C, and F5 iWorkflow
There is no impact on these F5 products; they are not affected by this
vulnerability.
Security Advisory Status
F5 Product Development has assigned CPF-24981 and CPF-24982 (Traffix SDC) 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 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| | | | |
+-----------------+------+----------+----------+------------+------+----------+
| |17.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |16.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
|BIG-IP (LTM, AAM,|15.x |None |Not | | | |
|AFM, Analytics, | | |applicable| | | |
|APM, ASM, DNS, +------+----------+----------+ | | |
|Edge Gateway, |14.x |None |Not |Not |None |None |
|FPS, GTM, Link | | |applicable|vulnerable^2| | |
|Controller, PEM, +------+----------+----------+ | | |
|WebAccelerator) |13.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |12.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |11.x |None |Not | | | |
| | | |applicable| | | |
+-----------------+------+----------+----------+------------+------+----------+
|Enterprise |3.x |None |Not |Not |None |None |
|Manager | | |applicable|vulnerable^2| | |
+-----------------+------+----------+----------+------------+------+----------+
| |7.x |None |Not | | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |6.x |None |Not | | | |
|BIG-IQ | | |applicable|Not | | |
|Centralized +------+----------+----------+vulnerable^ |None |None |
|Management |5.x |None |Not |2 | | |
| | | |applicable| | | |
| +------+----------+----------+ | | |
| |4.x |None |Not | | | |
| | | |applicable| | | |
+-----------------+------+----------+----------+------------+------+----------+
|F5OS-A |1.x |None |Not |Not |None |None |
| | | |applicable|vulnerable^2| | |
+-----------------+------+----------+----------+------------+------+----------+
|F5OS-C |1.x |None |Not |Not |None |None |
| | | |applicable|vulnerable^2| | |
+-----------------+------+----------+----------+------------+------+----------+
|BIG-IQ Cloud and |1.x |None |Not |Not |None |None |
|Orchestration | | |applicable|vulnerable^2| | |
+-----------------+------+----------+----------+------------+------+----------+
|F5 iWorkflow |2.x |None |Not |Not |None |None |
| | | |applicable|vulnerable^2| | |
+-----------------+------+----------+----------+------------+------+----------+
| |5.x |5.0.0 - |None | | | |
|Traffix SDC | |5.2.0 | |Medium |5.3 |OpenSSH |
| +------+----------+----------+ | | |
| |4.x |4.4.0 |None | | | |
+-----------------+------+----------+----------+------------+------+----------+
^1 The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.
^2 The 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.
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 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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