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

Synopsis:          Moderate: pidgin security, bug fix, and enhancement update
Advisory ID:       RHSA-2017:1854-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:1854
Issue date:        2017-08-01
CVE Names:         CVE-2014-3694 CVE-2014-3695 CVE-2014-3696 
                   CVE-2014-3698 CVE-2017-2640 
=====================================================================

1. Summary:

An update for pidgin is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le,
 s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Pidgin is an instant messaging program which can log in to multiple
accounts on multiple instant messaging networks simultaneously.

The following packages have been upgraded to a later upstream version:
pidgin (2.10.11). (BZ#1369526)

Security Fix(es):

* A denial of service flaw was found in the way Pidgin's Mxit plug-in
handled emoticons. A malicious remote server or a man-in-the-middle
attacker could potentially use this flaw to crash Pidgin by sending a
specially crafted emoticon. (CVE-2014-3695)

* A denial of service flaw was found in the way Pidgin parsed Groupwise
server messages. A malicious remote server or a man-in-the-middle attacker
could potentially use this flaw to cause Pidgin to consume an excessive
amount of memory, possibly leading to a crash, by sending a specially
crafted message. (CVE-2014-3696)

* An information disclosure flaw was discovered in the way Pidgin parsed
XMPP messages. A malicious remote server or a man-in-the-middle attacker
could potentially use this flaw to disclose a portion of memory belonging
to the Pidgin process by sending a specially crafted XMPP message.
(CVE-2014-3698)

* An out-of-bounds write flaw was found in the way Pidgin processed XML
content. A malicious remote server could potentially use this flaw to crash
Pidgin or execute arbitrary code in the context of the pidgin process.
(CVE-2017-2640)

* It was found that Pidgin's SSL/TLS plug-ins had a flaw in the certificate
validation functionality. An attacker could use this flaw to create a fake
certificate, that Pidgin would trust, which could be used to conduct
man-in-the-middle attacks against Pidgin. (CVE-2014-3694)

Red Hat would like to thank the Pidgin project for reporting these issues.
Upstream acknowledges Yves Younan (Cisco Talos) and Richard Johnson (Cisco
Talos) as the original reporters of CVE-2014-3695 and CVE-2014-3696; Thijs
Alkemade and Paul Aurich as the original reporters of CVE-2014-3698; and
Jacob Appelbaum and Moxie Marlinspike as the original reporters of
CVE-2014-3694.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.4 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

Pidgin must be restarted for this update to take effect.

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

1154908 - CVE-2014-3694 pidgin: SSL/TLS plug-ins failed to check Basic
 Constraints
1154909 - CVE-2014-3695 pidgin: crash in Mxit protocol plug-in
1154910 - CVE-2014-3696 pidgin: denial of service parsing Groupwise server
 message
1154911 - CVE-2014-3698 pidgin: remote information leak via crafted XMPP
 message
1369526 - Rebase pidgin to a newer upstream release
1430019 - CVE-2017-2640 pidgin: Out-of-bounds write in
 purple_markup_unescape_entity triggered by invalid XML
1439296 - Disable MXit
1445921 - jingle_rtp_initiate_media: 'resource' is used after being
 freed in an error path
1446368 - Silence -Wsign-compare

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
pidgin-2.10.11-5.el7.src.rpm

x86_64:
libpurple-2.10.11-5.el7.i686.rpm
libpurple-2.10.11-5.el7.x86_64.rpm
pidgin-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
finch-2.10.11-5.el7.i686.rpm
finch-2.10.11-5.el7.x86_64.rpm
finch-devel-2.10.11-5.el7.i686.rpm
finch-devel-2.10.11-5.el7.x86_64.rpm
libpurple-devel-2.10.11-5.el7.i686.rpm
libpurple-devel-2.10.11-5.el7.x86_64.rpm
libpurple-perl-2.10.11-5.el7.x86_64.rpm
libpurple-tcl-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm
pidgin-devel-2.10.11-5.el7.i686.rpm
pidgin-devel-2.10.11-5.el7.x86_64.rpm
pidgin-perl-2.10.11-5.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
pidgin-2.10.11-5.el7.src.rpm

aarch64:
libpurple-2.10.11-5.el7.aarch64.rpm
pidgin-debuginfo-2.10.11-5.el7.aarch64.rpm

ppc64:
libpurple-2.10.11-5.el7.ppc.rpm
libpurple-2.10.11-5.el7.ppc64.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc64.rpm

ppc64le:
libpurple-2.10.11-5.el7.ppc64le.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc64le.rpm

s390x:
libpurple-2.10.11-5.el7.s390.rpm
libpurple-2.10.11-5.el7.s390x.rpm
pidgin-debuginfo-2.10.11-5.el7.s390.rpm
pidgin-debuginfo-2.10.11-5.el7.s390x.rpm

x86_64:
libpurple-2.10.11-5.el7.i686.rpm
libpurple-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

aarch64:
finch-2.10.11-5.el7.aarch64.rpm
finch-devel-2.10.11-5.el7.aarch64.rpm
libpurple-devel-2.10.11-5.el7.aarch64.rpm
libpurple-perl-2.10.11-5.el7.aarch64.rpm
libpurple-tcl-2.10.11-5.el7.aarch64.rpm
pidgin-2.10.11-5.el7.aarch64.rpm
pidgin-debuginfo-2.10.11-5.el7.aarch64.rpm
pidgin-devel-2.10.11-5.el7.aarch64.rpm
pidgin-perl-2.10.11-5.el7.aarch64.rpm

ppc64:
finch-2.10.11-5.el7.ppc.rpm
finch-2.10.11-5.el7.ppc64.rpm
finch-devel-2.10.11-5.el7.ppc.rpm
finch-devel-2.10.11-5.el7.ppc64.rpm
libpurple-devel-2.10.11-5.el7.ppc.rpm
libpurple-devel-2.10.11-5.el7.ppc64.rpm
libpurple-perl-2.10.11-5.el7.ppc64.rpm
libpurple-tcl-2.10.11-5.el7.ppc64.rpm
pidgin-2.10.11-5.el7.ppc64.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc64.rpm
pidgin-devel-2.10.11-5.el7.ppc.rpm
pidgin-devel-2.10.11-5.el7.ppc64.rpm
pidgin-perl-2.10.11-5.el7.ppc64.rpm

ppc64le:
finch-2.10.11-5.el7.ppc64le.rpm
finch-devel-2.10.11-5.el7.ppc64le.rpm
libpurple-devel-2.10.11-5.el7.ppc64le.rpm
libpurple-perl-2.10.11-5.el7.ppc64le.rpm
libpurple-tcl-2.10.11-5.el7.ppc64le.rpm
pidgin-2.10.11-5.el7.ppc64le.rpm
pidgin-debuginfo-2.10.11-5.el7.ppc64le.rpm
pidgin-devel-2.10.11-5.el7.ppc64le.rpm
pidgin-perl-2.10.11-5.el7.ppc64le.rpm

s390x:
finch-2.10.11-5.el7.s390.rpm
finch-2.10.11-5.el7.s390x.rpm
finch-devel-2.10.11-5.el7.s390.rpm
finch-devel-2.10.11-5.el7.s390x.rpm
libpurple-devel-2.10.11-5.el7.s390.rpm
libpurple-devel-2.10.11-5.el7.s390x.rpm
libpurple-perl-2.10.11-5.el7.s390x.rpm
libpurple-tcl-2.10.11-5.el7.s390x.rpm
pidgin-2.10.11-5.el7.s390x.rpm
pidgin-debuginfo-2.10.11-5.el7.s390.rpm
pidgin-debuginfo-2.10.11-5.el7.s390x.rpm
pidgin-devel-2.10.11-5.el7.s390.rpm
pidgin-devel-2.10.11-5.el7.s390x.rpm
pidgin-perl-2.10.11-5.el7.s390x.rpm

x86_64:
finch-2.10.11-5.el7.i686.rpm
finch-2.10.11-5.el7.x86_64.rpm
finch-devel-2.10.11-5.el7.i686.rpm
finch-devel-2.10.11-5.el7.x86_64.rpm
libpurple-devel-2.10.11-5.el7.i686.rpm
libpurple-devel-2.10.11-5.el7.x86_64.rpm
libpurple-perl-2.10.11-5.el7.x86_64.rpm
libpurple-tcl-2.10.11-5.el7.x86_64.rpm
pidgin-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm
pidgin-devel-2.10.11-5.el7.i686.rpm
pidgin-devel-2.10.11-5.el7.x86_64.rpm
pidgin-perl-2.10.11-5.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
pidgin-2.10.11-5.el7.src.rpm

x86_64:
libpurple-2.10.11-5.el7.i686.rpm
libpurple-2.10.11-5.el7.x86_64.rpm
pidgin-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
finch-2.10.11-5.el7.i686.rpm
finch-2.10.11-5.el7.x86_64.rpm
finch-devel-2.10.11-5.el7.i686.rpm
finch-devel-2.10.11-5.el7.x86_64.rpm
libpurple-devel-2.10.11-5.el7.i686.rpm
libpurple-devel-2.10.11-5.el7.x86_64.rpm
libpurple-perl-2.10.11-5.el7.x86_64.rpm
libpurple-tcl-2.10.11-5.el7.x86_64.rpm
pidgin-debuginfo-2.10.11-5.el7.i686.rpm
pidgin-debuginfo-2.10.11-5.el7.x86_64.rpm
pidgin-devel-2.10.11-5.el7.i686.rpm
pidgin-devel-2.10.11-5.el7.x86_64.rpm
pidgin-perl-2.10.11-5.el7.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2014-3694
https://access.redhat.com/security/cve/CVE-2014-3695
https://access.redhat.com/security/cve/CVE-2014-3696
https://access.redhat.com/security/cve/CVE-2014-3698
https://access.redhat.com/security/cve/CVE-2017-2640
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.4_Release_Notes/index.html

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2017 Red Hat, Inc.
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