Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2015.2639
sol17462: Linux kernel vulnerability CVE-2015-2830
20 October 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Root Compromise -- Existing Account
Resolution: Mitigation
CVE Names: CVE-2015-2830
Reference: ESB-2015.1865
ESB-2015.1628
ESB-2015.1627
ESB-2015.1626
ESB-2015.1137
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/17000/400/sol17462.html
- --------------------------BEGIN INCLUDED TEXT--------------------
sol17462: Linux kernel vulnerability CVE-2015-2830
Security Advisory
Original Publication Date: 10/19/2015
Description
arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not
prevent the TS_COMPAT flag from reaching a user-mode task, which might
allow local users to bypass the seccomp or audit protection mechanism via
a crafted application that uses the (1) fork or (2) close system call,
as demonstrated by an attack against seccomp before 3.16. (CVE-2015-2830)
Impact
An authenticated attacker may be able to cause an escalation of privileges
through a crafted application that uses the fork or close system call.
Status
F5 Product Development has assigned ID 533413 (BIG-IP), ID 542392 (BIG-IQ)
and ID 542393 (Enterprise Manager) to this vulnerability, and has evaluated
the currently supported releases for potential vulnerability.
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:
Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature
BIG-IP LTM 12.0.0 None Low Linux kernel
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP AAM 12.0.0 None Low Linux kernel
11.4.0 - 11.6.0
BIG-IP AFM 12.0.0 None Low Linux kernel
11.3.0 - 11.6.0
BIG-IP 12.0.0 None Low Linux kernel
Analytics 11.0.0 - 11.6.0
BIG-IP APM 12.0.0 None Low Linux kernel
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP ASM 12.0.0 None Low Linux kernel
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP DNS 12.0.0 None Low Linux kernel
BIG-IP Edge 11.0.0 - 11.3.0 None Low Linux kernel
Gateway 10.1.0 - 10.2.4
BIG-IP GTM 11.0.0 - 11.6.0 None Low Linux kernel
10.1.0 - 10.2.4
BIG-IP Link 12.0.0 None Low Linux kernel
Controller 11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP PEM 12.0.0 None Low Linux kernel
11.3.0 - 11.6.0
BIG-IP PSM 11.0.0 - 11.4.1 None Low Linux kernel
10.1.0 - 10.2.4
BIG-IP 11.0.0 - 11.3.0 None Low Linux kernel
WebAccelerator 10.1.0 - 10.2.4
BIG-IP WOM 11.0.0 - 11.3.0 None Low Linux kernel
10.1.0 - 10.2.4
ARX None 6.0.0 - 6.4.0 Not vulnerable None
Enterprise 3.0.0 - 3.1.1 None Low Linux kernel
Manager
FirePass None 7.0.0 Not vulnerable None
6.0.0 - 6.1.0
BIG-IQ Cloud 4.0.0 - 4.5.0 None Low Linux kernel
BIG-IQ Device 4.2.0 - 4.5.0 None Low Linux kernel
BIG-IQ Security 4.0.0 - 4.5.0 None Low Linux kernel
BIG-IQ ADC 4.5.0 None Low Linux kernel
LineRate None 2.5.0 - 2.6.1 Not vulnerable None
F5 WebSafe None 1.0.0 Not vulnerable None
Traffix SDC None 4.0.0 - 4.4.0 Not vulnerable None
3.3.2 - 3.5.1
Recommended Action
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 Versions known to be not vulnerable 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.
F5 responds to vulnerabilities in accordance with the Severity values
published in the previous table. The Severity values and other security
vulnerability parameters are defined in SOL4602: Overview of the F5 security
vulnerability response policy.
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/Enterprise Manager systems, refer to SOL13309: Restricting
access to the Configuration utility by source IP address (11.x - 12.x)
and SOL13092: Overview of securing access to the BIG-IP system.
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
SOL4918: Overview of the F5 critical issue hotfix policy
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=0+7O
-----END PGP SIGNATURE-----