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AUSCERT Security Bulletin
ASB-2012.0171
Multiple vulnerabilities have been fixed in F5 BIG-IP
12 December 2012
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AusCERT Security Bulletin Summary
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Product: BIG-IP
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2012-0248 CVE-2012-0247 CVE-2011-4313
Member content until: Friday, January 11 2013
Reference: ASB-2012.0093
ESB-2012.0247
ASB-2011.0102
OVERVIEW
F5 has released new hotfix for BIG-IP.
IMPACT
Multiple security fixes are included in the latest hotfix:
"BIND has been updated to 9.6-ESV-R5-P1 to mitigate CVE-2011-4313." [1]
"The WebAccelerator module is no longer susceptible to issues described
in CVE-2012-0247 and CVE-2012-0248." [1]
The following additional information is available from the previous
AusCERT bulletins:
CVE-2011-4313:
"Various organisations have reported to ISC that their BIND 9 servers
have been crashing after performing recursive queries. ISC has stated
that the problem is that BIND would cache an invalid record for which
subsequent queries would trigger the crash." [2]
CVE-2012-0247:
"When parsing a maliciously crafted image with incorrect offset and count
in the ResolutionUnit tag in EXIF IFD0, ImageMagick writes two bytes to
an invalid address." [3]
CVE-2012-0248:
"Parsing a maliciously crafted image with an IFD whose all IOP tags
value offsets point to the beginning of the IFD itself results in an
endless loop and a denial of service." [3]
MITIGATION
Customers should install BIG-IP 11.2.0 HF3.
REFERENCES
[1] Release Note: BIG-IP LTM and TMOS version 11.2.0
http://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote-ltm-11-2-0.html
[2] ASB-2011.0102 - ALERT [Win][UNIX/Linux] BIND: Denial of service -
Remote/unauthenticated
https://auscert.org.au/15104
[3] ESB-2012.0247 - [Win][UNIX/Linux][Debian] imagemagick: Multiple
vulnerabilities
https://auscert.org.au/15561
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. 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.
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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.
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