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[Sun] UPDATE: Schwachstellen in OpenSSL - 102711
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Liebe Kolleginnen und Kollegen,
soeben erreichte uns das nachfolgende Bulletin des SUN Customer Warning
System. Wir geben diese Informationen unveraendert an Sie weiter.
Bitte beachten Sie, dass dies ein Update des Advisories ist, das die
folgenden Aenderungen betrifft:
Solaris 9 wurde aus der Liste der betroffenen Systeme entfernt. Es
wurde festgestellt, dass die verwundbaren Teile von OpenSSL in Solaris
9 nicht beinhaltet sind.
CVE-2006-3738 - Buffer Overflow in Funktion SSL_get_shared_ciphers() in
OpenSSL
In OpenSSL wurde innerhalb der Funktion SSL_get_shared_ciphers() eine
Schwachstelle entdeckt, durch die ein Buffer Overflow ausgeloest
werden kann. Die Funktion dient dem Bilden einer Schnittmenge zwischen
den vom Server und und vom Client unterstuetzten Ciphers. Ein
Angreifer kann durch das Senden von manipulierten Daten den Buffer
Overflow ausloesen und damit potentiell beliebige Befehle auf dem
betroffenen System ausfuehren.
Ob eine Anwendung von der Schwachstelle betroffen ist, haengt davon
ab, ob sie die Funktion SSL_get_shared_ciphers() verwendet. Dies ist
z.B. bei Exim, MySQL und openssl s_client / s_server der Fall.
CVE-2006-4343 - Null Pointer Referenzierung in get_server_hello()
Die OpenSSL Funktion get_server_hello() kann unter bestimmten
Umstaenden einen Null Pointer dereferenzieren, wodurch die Anwendung
abstuerzt. Dies ist z.B. im SSLv2 Client der Fall. Ein Angreifer kann
diese Schwachstelle ueber einen manipuliteren SSL-Server zu einem
Denial of Service Angriff ausnutzen.
Betroffen sind die folgenden Software Pakete und Plattformen:
SPARC Platform
* Solaris 10
x86 Platform
* Solaris 10
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
Hersteller Advisory:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102711-1
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Jan Kohlrausch (CSIRT), DFN-CERT Services GmbH
Web: https://www.dfn-cert.de/, Phone: +49-40-808077-555
PGP RSA/2048, A5DD03D1, A2 55 1C 51 0A 30 3E 78 5B 40 DA B7 14 F7 C9 E8
Preliminary Sun(sm) Alert Notification
This is a preliminary Sun Alert notification. Sun provides these notices in
an effort to allow customers to implement mitigation strategies while these
issues are being investigated. The information contained in these documents
is likely to change as more is learned about the applicable issues. At the
time of publication, workarounds and/or final resolutions are not available
for the issues. Preliminary Sun Alert notifications will be updated as more
information becomes available.
* Sun Alert ID: 102711
* Synopsis: Security Vulnerabilities in OpenSSL May Lead to a Denial of
Service (DoS) to Applications or Execution of Arbitrary Code With
Elevated Privileges
* Category: Security
* Product: Solaris 10 Operating System
* BugIDs: 6466370
* Avoidance: None
* State: Preliminary
* Date Released: 09-Nov-2006
* Date Closed:
* Date Modified: 13-Nov-2006
1. Impact
Two security vulnerabilities in the OpenSSL product (see openssl(5)) shipped
with Solaris 10 may affect applications which make use of this product.
Depending on the individual application the first issue may allow a local or
remote unprivileged user to execute arbitrary code with the privileges of
the user running the application.
The second issue may allow a remote user who controls a server to which an
application connects to crash that application, causing a Denial of Service
(DoS) condition.
These issues are also referenced in the following documents:
http://www.openssl.org/news/secadv_20060928.txt
CVE-2006-3738 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3738
CVE-2006-4343 at http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4343
Sun wishes to acknowledge, with thanks, Tavis Ormandy and Will Drewry
(Google Security Team) for bringing these issues to our attention.
2. Contributing Factors
These issues can occur in the following releases:
SPARC Platform
* Solaris 10
x86 Platform
* Solaris 10
Note: Solaris 8 and 9 do not include the OpenSSL toolkit, and therefore are
not vulnerable to this issue.
3. Symptoms
There are no predictable symptoms which would indicate that the first issue
mentioned above has been exploited to gain elevated privileges.
If the second issue has been exploited, the affected application will no
longer be available, and depending on the system configuration, core files
may be created and application crashes may be mentioned in system logs.
Solution Summary Top
4. Relief/Workaround
There is no workaround for these issues.
5. Resolution
A final resolution is pending completion.
Change History
13-Nov-2006:
* Updated Impact and Contributing Factors sections
This Sun Alert notification is being provided to you on an "AS IS" basis.
This Sun Alert notification may contain information provided by third
parties. The issues described in this Sun Alert notification may or may not
impact your system(s). Sun makes no representations, warranties, or
guarantees as to the information contained herein. ANY AND ALL WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE
HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT YOU ACKNOWLEDGE THAT SUN SHALL
IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR
CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE
INFORMATION CONTAINED HEREIN. This Sun Alert notification contains Sun
proprietary and confidential information. It is being provided to you
pursuant to the provisions of your agreement to purchase services from Sun,
or, if you do not have such an agreement, the Sun.com Terms of Use. This Sun
Alert notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
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