[RedHat] Mehrere Schwachstellen in Pidgin vor Version 2.6.2

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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.

CVE-2009-2703 – Null Pointer Referenzierung im IRC Plugin der Bibliothek
libpurple

Im IRC Plugin der Bibliothek libpurple laesst sich durch eine TOPIC
Nachricht ohne Topic String die Referenzierung eines Null Pointers
ausloesen, was zum Absturz des Programms fuehrt, das die Bibliothek
benutzt. Ein entfernter Angreifer kann diese Schwachstelle zu einem
Denial of Service Angriff ausnutzen.

CVE-2009-3083 – Null Pointer Referenzierung im MSN Plugin der Bibliothek
libpurple

Im Msn Plugin der Bibliothek libpurple laesst sich durch eine SLP
Invite Nachricht die Referenzierung eines Null Pointers ausloesen,
falls eines der vorgeschriebenen Felder nicht vorhanden ist. Ein
entfernter Angreifer kann diese Schwachstelle dazu ausnutzen, das
Programm welches die Bibliothek verwendet, zum Absturz zu bringen
(Denial of Service).

CVE-2009-3085 – Schwachstelle im XMPP Protokoll Plugin der Bibliothek
libpurple

Ein Fehler im XMPP Protokoll Plugin der Bibliothek libpurple beim
Laden eines Smileys fuehrt dazu, das ein “Error IQ Stanza” nicht
korrekt bearbeitet wird. Ein entfernter Angreifer kann diese
Schwachstelle dazu ausnutzen, dass Programm welches die Bibliothek
verwendet, zum Absturz zu bringen (Denial of Service).

CVE-2009-3026 – Biblithek libpurple befolgt “require TLS/SSL” Direktive
nicht

Der Jabber Code aus der Bibliothek libpurple befolgt die “require
TLS/SSL” Direktive nicht, wenn eine Verbindung zu einem Jabber Server
aufgebaut wird, der noch nicht der XMPP Spezifikation entspricht. Dies
ermoeglicht entfernten Angreifern, den Inhalt einer Jabber Session
mitzuschneiden.

Betroffen sind die folgenden Software Pakete und Plattformen:

Paket pidgin

Red Hat Enterprise Linux AS version 4 – i386, ia64, ppc, x86_64
Red Hat Enterprise Linux Desktop version 4 – i386, x86_64
Red Hat Enterprise Linux ES version 4 – i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 – i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
RHEL Optional Productivity Applications (v. 5 server) – i386, x86_64

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

Hersteller Advisory:
https://rhn.redhat.com/errata/RHSA-2009-1453.html

(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,
Klaus Moeller, DFN-CERT

– —
Dipl. Inform. Klaus Moeller (Incident Response Team)
Phone: +49 40 808077-555, Fax: +49 40 808077-556

DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrase 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski

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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: pidgin security update
Advisory ID: RHSA-2009:1453-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1453.html
Issue date: 2009-09-21
CVE Names: CVE-2009-2703 CVE-2009-3026 CVE-2009-3083
CVE-2009-3085
=====================================================================

1. Summary:

Updated pidgin packages that fix several security issues are now available
for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

3. Description:

Pidgin is an instant messaging program which can log in to multiple
accounts on multiple instant messaging networks simultaneously. Info/Query
(IQ) is an Extensible Messaging and Presence Protocol (XMPP) specific
request-response mechanism.

A NULL pointer dereference flaw was found in the way the Pidgin XMPP
protocol plug-in processes IQ error responses when trying to fetch a custom
smiley. A remote client could send a specially-crafted IQ error response
that would crash Pidgin. (CVE-2009-3085)

A NULL pointer dereference flaw was found in the way the Pidgin IRC
protocol plug-in handles IRC topics. A malicious IRC server could send a
specially-crafted IRC TOPIC message, which once received by Pidgin, would
lead to a denial of service (Pidgin crash). (CVE-2009-2703)

It was discovered that, when connecting to certain, very old Jabber servers
via XMPP, Pidgin may ignore the “Require SSL/TLS” setting. In these
situations, a non-encrypted connection is established rather than the
connection failing, causing the user to believe they are using an encrypted
connection when they are not, leading to sensitive information disclosure
(session sniffing). (CVE-2009-3026)

A NULL pointer dereference flaw was found in the way the Pidgin MSN
protocol plug-in handles improper MSNSLP invitations. A remote attacker
could send a specially-crafted MSNSLP invitation request, which once
accepted by a valid Pidgin user, would lead to a denial of service (Pidgin
crash). (CVE-2009-3083)

These packages upgrade Pidgin to version 2.6.2. Refer to the Pidgin release
notes for a full list of changes: http://developer.pidgin.im/wiki/ChangeLog

All Pidgin users should upgrade to these updated packages, which correct
these issues. Pidgin must be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

519224 – CVE-2009-3026 pidgin: ignores SSL/TLS requirements with old jabber servers
521823 – CVE-2009-2703 Pidgin: NULL pointer dereference by handling IRC topic(s) (DoS)
521832 – CVE-2009-3083 Pidgin: NULL pointer dereference by processing incomplete MSN SLP invite (DoS)
521853 – CVE-2009-3085 Pidgin: NULL pointer dereference by processing a custom smiley (DoS)

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/pidgin-2.6.2-2.el4.src.rpm

i386:
finch-2.6.2-2.el4.i386.rpm
finch-devel-2.6.2-2.el4.i386.rpm
libpurple-2.6.2-2.el4.i386.rpm
libpurple-devel-2.6.2-2.el4.i386.rpm
libpurple-perl-2.6.2-2.el4.i386.rpm
libpurple-tcl-2.6.2-2.el4.i386.rpm
pidgin-2.6.2-2.el4.i386.rpm
pidgin-debuginfo-2.6.2-2.el4.i386.rpm
pidgin-devel-2.6.2-2.el4.i386.rpm
pidgin-perl-2.6.2-2.el4.i386.rpm

ia64:
finch-2.6.2-2.el4.ia64.rpm
finch-devel-2.6.2-2.el4.ia64.rpm
libpurple-2.6.2-2.el4.ia64.rpm
libpurple-devel-2.6.2-2.el4.ia64.rpm
libpurple-perl-2.6.2-2.el4.ia64.rpm
libpurple-tcl-2.6.2-2.el4.ia64.rpm
pidgin-2.6.2-2.el4.ia64.rpm
pidgin-debuginfo-2.6.2-2.el4.ia64.rpm
pidgin-devel-2.6.2-2.el4.ia64.rpm
pidgin-perl-2.6.2-2.el4.ia64.rpm

ppc:
finch-2.6.2-2.el4.ppc.rpm
finch-devel-2.6.2-2.el4.ppc.rpm
libpurple-2.6.2-2.el4.ppc.rpm
libpurple-devel-2.6.2-2.el4.ppc.rpm
libpurple-perl-2.6.2-2.el4.ppc.rpm
libpurple-tcl-2.6.2-2.el4.ppc.rpm
pidgin-2.6.2-2.el4.ppc.rpm
pidgin-debuginfo-2.6.2-2.el4.ppc.rpm
pidgin-devel-2.6.2-2.el4.ppc.rpm
pidgin-perl-2.6.2-2.el4.ppc.rpm

x86_64:
finch-2.6.2-2.el4.x86_64.rpm
finch-devel-2.6.2-2.el4.x86_64.rpm
libpurple-2.6.2-2.el4.x86_64.rpm
libpurple-devel-2.6.2-2.el4.x86_64.rpm
libpurple-perl-2.6.2-2.el4.x86_64.rpm
libpurple-tcl-2.6.2-2.el4.x86_64.rpm
pidgin-2.6.2-2.el4.x86_64.rpm
pidgin-debuginfo-2.6.2-2.el4.x86_64.rpm
pidgin-devel-2.6.2-2.el4.x86_64.rpm
pidgin-perl-2.6.2-2.el4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/pidgin-2.6.2-2.el4.src.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/pidgin-2.6.2-2.el4.src.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/pidgin-2.6.2-2.el4.src.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/pidgin-2.6.2-2.el5.src.rpm

i386:
finch-2.6.2-2.el5.i386.rpm
libpurple-2.6.2-2.el5.i386.rpm
libpurple-perl-2.6.2-2.el5.i386.rpm
libpurple-tcl-2.6.2-2.el5.i386.rpm
pidgin-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-perl-2.6.2-2.el5.i386.rpm

x86_64:
finch-2.6.2-2.el5.i386.rpm
finch-2.6.2-2.el5.x86_64.rpm
libpurple-2.6.2-2.el5.i386.rpm
libpurple-2.6.2-2.el5.x86_64.rpm
libpurple-perl-2.6.2-2.el5.x86_64.rpm
libpurple-tcl-2.6.2-2.el5.x86_64.rpm
pidgin-2.6.2-2.el5.i386.rpm
pidgin-2.6.2-2.el5.x86_64.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.x86_64.rpm
pidgin-perl-2.6.2-2.el5.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/pidgin-2.6.2-2.el5.src.rpm

i386:
finch-devel-2.6.2-2.el5.i386.rpm
libpurple-devel-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-devel-2.6.2-2.el5.i386.rpm

x86_64:
finch-devel-2.6.2-2.el5.i386.rpm
finch-devel-2.6.2-2.el5.x86_64.rpm
libpurple-devel-2.6.2-2.el5.i386.rpm
libpurple-devel-2.6.2-2.el5.x86_64.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.x86_64.rpm
pidgin-devel-2.6.2-2.el5.i386.rpm
pidgin-devel-2.6.2-2.el5.x86_64.rpm

RHEL Optional Productivity Applications (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/pidgin-2.6.2-2.el5.src.rpm

i386:
finch-2.6.2-2.el5.i386.rpm
finch-devel-2.6.2-2.el5.i386.rpm
libpurple-2.6.2-2.el5.i386.rpm
libpurple-devel-2.6.2-2.el5.i386.rpm
libpurple-perl-2.6.2-2.el5.i386.rpm
libpurple-tcl-2.6.2-2.el5.i386.rpm
pidgin-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-devel-2.6.2-2.el5.i386.rpm
pidgin-perl-2.6.2-2.el5.i386.rpm

x86_64:
finch-2.6.2-2.el5.i386.rpm
finch-2.6.2-2.el5.x86_64.rpm
finch-devel-2.6.2-2.el5.i386.rpm
finch-devel-2.6.2-2.el5.x86_64.rpm
libpurple-2.6.2-2.el5.i386.rpm
libpurple-2.6.2-2.el5.x86_64.rpm
libpurple-devel-2.6.2-2.el5.i386.rpm
libpurple-devel-2.6.2-2.el5.x86_64.rpm
libpurple-perl-2.6.2-2.el5.x86_64.rpm
libpurple-tcl-2.6.2-2.el5.x86_64.rpm
pidgin-2.6.2-2.el5.i386.rpm
pidgin-2.6.2-2.el5.x86_64.rpm
pidgin-debuginfo-2.6.2-2.el5.i386.rpm
pidgin-debuginfo-2.6.2-2.el5.x86_64.rpm
pidgin-devel-2.6.2-2.el5.i386.rpm
pidgin-devel-2.6.2-2.el5.x86_64.rpm
pidgin-perl-2.6.2-2.el5.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2703
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3026
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3083
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3085
http://www.redhat.com/security/updates/classification/#moderate
http://xmpp.org/rfcs/rfc3920.html#stanzas-semantics-iq

8. Contact:

The Red Hat security contact is . More contact
details at https://www.redhat.com/security/team/contact/

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[RedHat] Mehrere Schwachstellen in Pidgin vor Version 2.6.2 - RHSA-2009:1453-01

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[RedHat] Mehrere Schwachstellen in Pidgin vor Version 2.6.2 – RHSA-2009:1453-01

[RedHat] Mehrere Schwachstellen in Pidgin vor Version 2.6.2 - RHSA-2009:1453-01