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AUSCERT External Security Bulletin Redistribution
ESB-2015.2394
SOL17251: Apache vulnerability CVE-2015-3183
11 September 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Provide Misleading Information -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-3183
Reference: ASB-2015.0086
ESB-2015.2295
ESB-2015.2216
ESB-2015.2215
ESB-2015.2154
ESB-2015.2113
ESB-2015.2004
ESB-2015.1872
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/17000/200/sol17251.html
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SOL17251: Apache vulnerability CVE-2015-3183
Security Advisory
Original Publication Date: 09/09/2015
Description
The chunked transfer coding implementation in the Apache HTTP Server before
2.4.14 does not properly parse chunk headers, which allows remote attackers to
conduct HTTP request smuggling attacks via a crafted request, related to
mishandling of large chunk-size values and invalid chunk-extension characters
in modules/http/http_filters.c. (CVE-2015-3183)
Impact
An attacker with access to the plaintext data of a connection to the BIG-IP
control plane may be able to exploit a flaw in Apache to partially impact the
integrity of a session.
Note: All connections to the BIG-IP Configuration utility are encrypted with
SSL/TLS, so an attacker would need to be able to decrypt the cipher text and
obtain the plaintext before launching this attack.
Status
F5 Product Development has assigned ID 537255 (BIG-IP), ID 538018 (BIG-IQ), ID
538016 (Enterprise Manager), and ID 431234 (ARX) 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 Versions known to Severity Vulnerable component
be vulnerable be not vulnerable or feature
BIG-IP LTM 12.0.0 None Low Apache
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP AAM 12.0.0
11.4.0 - 11.6.0 None Low Apache
BIG-IP AFM 12.0.0
11.3.0 - 11.6.0 None Low Apache
BIG-IP Analytics 12.0.0
11.0.0 - 11.6.0 None Low Apache
BIG-IP APM 12.0.0 None Low Apache
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP ASM 12.0.0 None Low Apache
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP DNS 12.0.0 None Low Apache
BIG-IP Edge Gateway 11.0.0 - 11.3.0
10.1.0 - 10.2.4 None Low Apache
BIG-IP GTM 11.0.0 - 11.6.0
10.1.0 - 10.2.4 None Low Apache
BIG-IP Link Controller 12.0.0 None Low Apache
11.0.0 - 11.6.0
10.1.0 - 10.2.4
BIG-IP PEM 12.0.0
11.3.0 - 11.6.0 None Low Apache
BIG-IP PSM 11.0.0 - 11.4.1
10.1.0 - 10.2.4 None Low Apache
BIG-IP WebAccelerator 11.0.0 - 11.3.0
10.1.0 - 10.2.4 None Low Apache
BIG-IP WOM 11.0.0 - 11.3.0
10.1.0 - 10.2.4 None Low Apache
ARX 6.0.0 - 6.4.0 None Low Apache
Enterprise Manager 3.0.0 - 3.1.1 None Low Apache
FirePass None 7.0.0
6.0.0 - 6.1.0 Not vulnerable None
BIG-IQ Cloud 4.0.0 - 4.5.0 None Low Apache
BIG-IQ Device 4.2.0 - 4.5.0 None Low Apache
BIG-IQ Security 4.0.0 - 4.5.0 None Low Apache
BIG-IQ ADC 4.5.0 None Low Apache
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
3.3.2 - 3.5.1 Not vulnerable None
Note: As of February 17, 2015, AskF5 Security Advisory articles include the
Severity value. Security Advisory articles published before this date do not
list a Severity value.
Recommended Action
If the previous table lists a version in the Versions known to be not
vulnerable column, you can eliminate this vulnerability by upgrading to the
listed version. If the listed version is older than the version you are
currently running, or if the table does not list any version in the column,
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, you should permit management access to F5
products only over a secure network and limit shell access to trusted users.
For more information about securing access to BIG-IP and Enterprise Manager
systems, refer to SOL13309: Restricting access to the Configuration utility by
source IP address (11.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
SOL167: Downloading software and firmware from F5
SOL13123: Managing BIG-IP product hotfixes (11.x)
SOL10025: Managing BIG-IP product hotfixes (10.x)
SOL9502: BIG-IP hotfix matrix
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