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AUSCERT Security Bulletin
ASB-2014.0043
The TLS heartbeat vulnerability has been identified in stunnel
11 April 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: stunnel
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-0160
Member content until: Sunday, May 11 2014
Reference: ASB-2014.0042
ESB-2014.0457
OVERVIEW
The TLS heartbeat vulnerability has been identified in stunnel. [1]
IMPACT
The following details are available on the heartbeat vulnerability:
"A missing bounds check in the handling of the TLS heartbeat extension
can be used to reveal up to 64k of memory to a connected client or
server." [2]
MITIGATION
The vendor recommends upgrading to the latest version. [1]
REFERENCES
[1] stunnel: ChangeLog
https://www.stunnel.org/sdf_ChangeLog.html
[2] OpenSSL Security Advisory [07 Apr 2014]
http://www.openssl.org/news/secadv_20140407.txt
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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