Pidgin DoS Vulnerability CVE-2009-2703 in Scientific Linux 4.x and 5.x

Date: Tue, 22 Sep 2009 14:25:30 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: pidgin on SL4.x, SL5.x i386/x86_64
Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it."
 

Synopsis:	Moderate: pidgin security update
Issue date:	2009-09-21
CVE Names:	CVE-2009-2703 CVE-2009-3026 CVE-2009-3083
 CVE-2009-3085

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

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)

Pidgin must be restarted for this update to take effect.

SL 4.x

 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-devel-2.6.2-2.el4.i386.rpm
pidgin-perl-2.6.2-2.el4.i386.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-devel-2.6.2-2.el4.x86_64.rpm
pidgin-perl-2.6.2-2.el4.x86_64.rpm

SL 5.x

 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-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-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-devel-2.6.2-2.el5.i386.rpm
pidgin-perl-2.6.2-2.el5.i386.rpm

-Connie Sieh
-Troy Dawson