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AUSCERT External Security Bulletin Redistribution
ESB-2009.1555.2
Security Vulnerability in the Transport Layer Security (TLS) and Secure
Sockets Layer 3.0 (SSLv3) Protocols Involving Handshake
Renegotiation Affects OpenSSL
24 June 2010
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Transport Layer Security
Secure Sockets Layer 3.0
Publisher: Sun Microsystems
Operating System: Solaris
OpenSolaris
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2009-3555
Reference: ASB-2009.1125
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-273029-1
Revision History: June 24 2010: Resolution added
November 23 2009: Initial Release
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Security Vulnerability in the Transport Layer Security (TLS) and
Secure Sockets Layer 3.0 (SSLv3) Protocols Involving Handshake
Renegotiation Affects OpenSSL
_________________________________________________________________
Category: Security
Release Phase: Resolved
Bug Id: SUNBUG: 6898546
SUNBUG: 6898539
Product: Solaris 10 Operating System
OpenSolaris
Date of Workaround Release: 19-Nov-2009
Date of Resolved Release:
22-Jun-2010
Security Vulnerability in the Transport Layer Security (TLS) and
Secure Sockets Layer 3.0 (SSLv3) Protocols Involving Handshake
Renegotiation Affects OpenSSL
1. Impact
A security vulnerability in the Transport Layer Security (TLS) and
Secure Sockets Layer 3.0 (SSLv3) protocols in the handling of session
renegotiations affects OpenSSL (see openssl(5)). This issue may allow
a remote unauthenticated user with the ability to intercept and
control network traffic to perform man-in-the-middle (MITM) attack to
inject arbitrary plaintext at the beginning of the application
protocol stream, thus compromising the integrity of the communication.
This vulnerability does not allow one to decrypt the intercepted
network communication.
The exact nature of the impact of compromised data integrity depends
on the application making use of the OpenSSL libraries.
Sun acknowledges with thanks, Marsh Ray and Steve Dispensa of
PhoneFactor for bringing this issue to our attention.
This issue is also referenced in the following documents:
CVE-2009-3555 at
[1]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
US-CERT VU#120541 at [2]http://www.kb.cert.org/vuls/id/120541
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Solaris 10 without patches [3]143140-04 and [4]145102-01
* OpenSolaris based upon builds snv_01 through snv_128
x86 Platform
* Solaris 10 without patch [5]141525-10
* OpenSolaris based upon builds snv_01 through snv_128
Notes:
1. Solaris 8 is not impacted by this issue.
2. Solaris 9 does not ship with OpenSSL libraries which can be used
for application linking and is thus not impacted by this issue.
OpenSolaris distributions may include additional bug fixes above and
beyond the build from which it was derived. The base build can be
derived as follows:
$ uname -v
snv_101
3. Symptoms
There are no predictable symptoms that would indicate the described
issue has occurred.
4. Workaround
Solaris Kernel SSL proxy module, KSSL (see ksslcfg(1M)) does not
support client renegotiation or rehandshake. Server applications which
use the KSSL module are not affected by this issue. KSSL may be used
to work around the described issue in such applications.
5. Resolution
This issue is addressed for applications that do not depend on TLS
session renegotiations in the following releases:
SPARC Platform
* Solaris 10 with patches [6]143140-04 or later and [7]145102-01 or
later
* OpenSolaris based upon builds snv_129 or later
x86 Platform
* Solaris 10 with patch [8]141525-10 or later
* OpenSolaris based upon builds snv_129 or later
SUNPATCH [9]143140-04
SUNPATCH [10]145102-01
SUNPATCH [11]141525-10
Modification History
03-Dec-2009: Updated Contributing Factors and Resolution sections for
OpenSolaris
22-Jun-2010: Updated Contributing Factors and Resolution sections for
patch release; issue is Resolved
Attachments
This solution has no attachment
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References
1. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
2. http://www.kb.cert.org/vuls/id/120541
3. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-143140-04-1
4. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-145102-01-1
5. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-141525-10-1
6. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-143140-04-1
7. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-145102-01-1
8. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-141525-10-1
9. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-143140-04-1
10. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-145102-01-1
11. http://sunsolve.sun.com/search/document.do?assetkey=urn:cds:docid:1-21-141525-10-1
12. http://www.oracle.com/us/corporate/index.htm
13. http://www.oracle.com/sun/index.html
14. http://www.oracle.com/rss/index.html
15. http://www.oracle.com/subscribe/index.html
16. http://www.oracle.com/corporate/employment/index.html
17. http://www.sun.com/contact/support.jsp
18. http://www.oracle.com/sitemaps/sitemaps.html
19. http://www.oracle.com/html/copyright.html
20. http://www.oracle.com/html/terms.html
21. file://localhost/sunsolveTermsOfUse.do
22. http://www.oracle.com/html/privacy.html
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