Moderate: vnc security update

Advisory:	RHSA-2009:0261-5
Type:	Security Advisory
Severity:	Moderate
Issued on:	2009-02-11
Last updated on:	2009-02-11
Affected Products:	Red Hat Desktop (v. 3) Red Hat Desktop (v. 4) Red Hat Enterprise Linux (v. 5 server) Red Hat Enterprise Linux AS (v. 3) Red Hat Enterprise Linux AS (v. 4) Red Hat Enterprise Linux AS (v. 4.7.z) Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux ES (v. 3) Red Hat Enterprise Linux ES (v. 4) Red Hat Enterprise Linux ES (v. 4.7.z) Red Hat Enterprise Linux EUS (v. 5.3.z server) Red Hat Enterprise Linux WS (v. 3) Red Hat Enterprise Linux WS (v. 4)
OVAL:	com.redhat.rhsa-20090261.xml
CVEs (cve.mitre.org):	CVE-2008-4770

Details

Updated vnc packages to correct a security issue are now available for Red
Hat Enterprise Linux 3, 4, and 5.

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

Virtual Network Computing (VNC) is a remote display system which allows you
to view a computer's "desktop" environment not only on the machine where it
is running, but from anywhere on the Internet and from a wide variety of
machine architectures.

An insufficient input validation flaw was discovered in the VNC client
application, vncviewer. If an attacker could convince a victim to connect
to a malicious VNC server, or when an attacker was able to connect to
vncviewer running in the "listen" mode, the attacker could cause the
victim's vncviewer to crash or, possibly, execute arbitrary code.
(CVE-2008-4770)

Users of vncviewer should upgrade to these updated packages, which contain
a backported patch to resolve this issue. For the update to take effect,
all running instances of vncviewer must be restarted after the update is
installed.

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

Updated packages

Red Hat Desktop (v. 3)

SRPMS:
vnc-4.0-0.beta4.1.8.src.rpm	`f2e61c1b2b63f9735e7273645f5cbc90`

IA-32:
vnc-4.0-0.beta4.1.8.i386.rpm	`89b4090c43c53abe8e34b83d912a08de`
vnc-server-4.0-0.beta4.1.8.i386.rpm	`6c8fc1056c2c7422d92b5b5acf72ed34`

x86_64:
vnc-4.0-0.beta4.1.8.x86_64.rpm	`8e36052c941ca26f4152d778cd62dfca`
vnc-server-4.0-0.beta4.1.8.x86_64.rpm	`bddb9e07dc2e243e09c45eef2a9ad4b3`

Red Hat Desktop (v. 4)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
vnc-4.1.2-14.el5_3.1.src.rpm	`53de924f01248ddfd0b2658aa9906093`

IA-32:
vnc-4.1.2-14.el5_3.1.i386.rpm	`c93e556b673ee6a69bcb70188a6c366f`
vnc-server-4.1.2-14.el5_3.1.i386.rpm	`f7a9845c6ee6096e5ba07705156d8ba9`

IA-64:
vnc-4.1.2-14.el5_3.1.ia64.rpm	`1e3683536234ecaefe0c28e5d550370d`
vnc-server-4.1.2-14.el5_3.1.ia64.rpm	`6341b164983b5e2682c909384bf3e1d4`

PPC:
vnc-4.1.2-14.el5_3.1.ppc.rpm	`aa64b1a1a586c8041be76714538ae957`
vnc-server-4.1.2-14.el5_3.1.ppc.rpm	`390f8bf907191c4fcfde7635761c666f`

s390x:
vnc-4.1.2-14.el5_3.1.s390x.rpm	`61cb0ffd16c4dfa92951fe2c61465289`
vnc-server-4.1.2-14.el5_3.1.s390x.rpm	`8397462b3071385e902aa2041c6121fd`

x86_64:
vnc-4.1.2-14.el5_3.1.x86_64.rpm	`291310d3456dd706cc1facbe86f9ecff`
vnc-server-4.1.2-14.el5_3.1.x86_64.rpm	`3d549bc11d41047e0c3affb0d7553917`

Red Hat Enterprise Linux AS (v. 3)

SRPMS:
vnc-4.0-0.beta4.1.8.src.rpm	`f2e61c1b2b63f9735e7273645f5cbc90`

IA-32:
vnc-4.0-0.beta4.1.8.i386.rpm	`89b4090c43c53abe8e34b83d912a08de`
vnc-server-4.0-0.beta4.1.8.i386.rpm	`6c8fc1056c2c7422d92b5b5acf72ed34`

IA-64:
vnc-4.0-0.beta4.1.8.ia64.rpm	`8cc8415d8469c5cd6de6bc85e02876bc`
vnc-server-4.0-0.beta4.1.8.ia64.rpm	`189b5f8a914ebaa3fdb207449e1532d4`

PPC:
vnc-4.0-0.beta4.1.8.ppc.rpm	`32eacabba0dac6bd24a05c1d84ed1026`
vnc-server-4.0-0.beta4.1.8.ppc.rpm	`0e308809951a22869d37a4e46ec2c7e6`

s390:
vnc-4.0-0.beta4.1.8.s390.rpm	`d749f97106fd0493dadd9f171fe469b7`
vnc-server-4.0-0.beta4.1.8.s390.rpm	`7f434ca0162f3079eb0f4fe8091ad124`

s390x:
vnc-4.0-0.beta4.1.8.s390x.rpm	`0e5bb11a8da3451510566755ad8bafb7`
vnc-server-4.0-0.beta4.1.8.s390x.rpm	`2b4dbf373b118ac953246464d04ab0c6`

x86_64:
vnc-4.0-0.beta4.1.8.x86_64.rpm	`8e36052c941ca26f4152d778cd62dfca`
vnc-server-4.0-0.beta4.1.8.x86_64.rpm	`bddb9e07dc2e243e09c45eef2a9ad4b3`

Red Hat Enterprise Linux AS (v. 4)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

IA-64:
vnc-4.0-12.el4_7.1.ia64.rpm	`b66201080bb8bbb3f80628becb447e0a`
vnc-server-4.0-12.el4_7.1.ia64.rpm	`5b8a78f6d4918139a01211219a140622`

PPC:
vnc-4.0-12.el4_7.1.ppc.rpm	`39ad6227989dfe2a1dfab362e2d7a2a5`
vnc-server-4.0-12.el4_7.1.ppc.rpm	`d3458e970cc7f2e1551e7d4e51791d63`

s390:
vnc-4.0-12.el4_7.1.s390.rpm	`db7a9bf23651edead675dd1a1dea03a8`
vnc-server-4.0-12.el4_7.1.s390.rpm	`b36de3299913a5ff9b7e0054cd4f2810`

s390x:
vnc-4.0-12.el4_7.1.s390x.rpm	`9d15edff6e48fa771f8185c069355803`
vnc-server-4.0-12.el4_7.1.s390x.rpm	`5c62863e97aafaf535f6c9423d0b3800`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

Red Hat Enterprise Linux AS (v. 4.7.z)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

IA-64:
vnc-4.0-12.el4_7.1.ia64.rpm	`b66201080bb8bbb3f80628becb447e0a`
vnc-server-4.0-12.el4_7.1.ia64.rpm	`5b8a78f6d4918139a01211219a140622`

PPC:
vnc-4.0-12.el4_7.1.ppc.rpm	`39ad6227989dfe2a1dfab362e2d7a2a5`
vnc-server-4.0-12.el4_7.1.ppc.rpm	`d3458e970cc7f2e1551e7d4e51791d63`

s390:
vnc-4.0-12.el4_7.1.s390.rpm	`db7a9bf23651edead675dd1a1dea03a8`
vnc-server-4.0-12.el4_7.1.s390.rpm	`b36de3299913a5ff9b7e0054cd4f2810`

s390x:
vnc-4.0-12.el4_7.1.s390x.rpm	`9d15edff6e48fa771f8185c069355803`
vnc-server-4.0-12.el4_7.1.s390x.rpm	`5c62863e97aafaf535f6c9423d0b3800`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
vnc-4.1.2-14.el5_3.1.src.rpm	`53de924f01248ddfd0b2658aa9906093`

IA-32:
vnc-4.1.2-14.el5_3.1.i386.rpm	`c93e556b673ee6a69bcb70188a6c366f`
vnc-server-4.1.2-14.el5_3.1.i386.rpm	`f7a9845c6ee6096e5ba07705156d8ba9`

x86_64:
vnc-4.1.2-14.el5_3.1.x86_64.rpm	`291310d3456dd706cc1facbe86f9ecff`
vnc-server-4.1.2-14.el5_3.1.x86_64.rpm	`3d549bc11d41047e0c3affb0d7553917`

Red Hat Enterprise Linux ES (v. 3)

SRPMS:
vnc-4.0-0.beta4.1.8.src.rpm	`f2e61c1b2b63f9735e7273645f5cbc90`

IA-32:
vnc-4.0-0.beta4.1.8.i386.rpm	`89b4090c43c53abe8e34b83d912a08de`
vnc-server-4.0-0.beta4.1.8.i386.rpm	`6c8fc1056c2c7422d92b5b5acf72ed34`

IA-64:
vnc-4.0-0.beta4.1.8.ia64.rpm	`8cc8415d8469c5cd6de6bc85e02876bc`
vnc-server-4.0-0.beta4.1.8.ia64.rpm	`189b5f8a914ebaa3fdb207449e1532d4`

x86_64:
vnc-4.0-0.beta4.1.8.x86_64.rpm	`8e36052c941ca26f4152d778cd62dfca`
vnc-server-4.0-0.beta4.1.8.x86_64.rpm	`bddb9e07dc2e243e09c45eef2a9ad4b3`

Red Hat Enterprise Linux ES (v. 4)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

IA-64:
vnc-4.0-12.el4_7.1.ia64.rpm	`b66201080bb8bbb3f80628becb447e0a`
vnc-server-4.0-12.el4_7.1.ia64.rpm	`5b8a78f6d4918139a01211219a140622`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

Red Hat Enterprise Linux ES (v. 4.7.z)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

IA-64:
vnc-4.0-12.el4_7.1.ia64.rpm	`b66201080bb8bbb3f80628becb447e0a`
vnc-server-4.0-12.el4_7.1.ia64.rpm	`5b8a78f6d4918139a01211219a140622`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

Red Hat Enterprise Linux EUS (v. 5.3.z server)

SRPMS:
vnc-4.1.2-14.el5_3.1.src.rpm	`53de924f01248ddfd0b2658aa9906093`

IA-32:
vnc-4.1.2-14.el5_3.1.i386.rpm	`c93e556b673ee6a69bcb70188a6c366f`
vnc-server-4.1.2-14.el5_3.1.i386.rpm	`f7a9845c6ee6096e5ba07705156d8ba9`

IA-64:
vnc-4.1.2-14.el5_3.1.ia64.rpm	`1e3683536234ecaefe0c28e5d550370d`
vnc-server-4.1.2-14.el5_3.1.ia64.rpm	`6341b164983b5e2682c909384bf3e1d4`

PPC:
vnc-4.1.2-14.el5_3.1.ppc.rpm	`aa64b1a1a586c8041be76714538ae957`
vnc-server-4.1.2-14.el5_3.1.ppc.rpm	`390f8bf907191c4fcfde7635761c666f`

s390x:
vnc-4.1.2-14.el5_3.1.s390x.rpm	`61cb0ffd16c4dfa92951fe2c61465289`
vnc-server-4.1.2-14.el5_3.1.s390x.rpm	`8397462b3071385e902aa2041c6121fd`

x86_64:
vnc-4.1.2-14.el5_3.1.x86_64.rpm	`291310d3456dd706cc1facbe86f9ecff`
vnc-server-4.1.2-14.el5_3.1.x86_64.rpm	`3d549bc11d41047e0c3affb0d7553917`

Red Hat Enterprise Linux WS (v. 3)

SRPMS:
vnc-4.0-0.beta4.1.8.src.rpm	`f2e61c1b2b63f9735e7273645f5cbc90`

IA-32:
vnc-4.0-0.beta4.1.8.i386.rpm	`89b4090c43c53abe8e34b83d912a08de`
vnc-server-4.0-0.beta4.1.8.i386.rpm	`6c8fc1056c2c7422d92b5b5acf72ed34`

IA-64:
vnc-4.0-0.beta4.1.8.ia64.rpm	`8cc8415d8469c5cd6de6bc85e02876bc`
vnc-server-4.0-0.beta4.1.8.ia64.rpm	`189b5f8a914ebaa3fdb207449e1532d4`

x86_64:
vnc-4.0-0.beta4.1.8.x86_64.rpm	`8e36052c941ca26f4152d778cd62dfca`
vnc-server-4.0-0.beta4.1.8.x86_64.rpm	`bddb9e07dc2e243e09c45eef2a9ad4b3`

Red Hat Enterprise Linux WS (v. 4)

SRPMS:
vnc-4.0-12.el4_7.1.src.rpm	`e35cc13e6e83f78d6f6b057f9345cf14`

IA-32:
vnc-4.0-12.el4_7.1.i386.rpm	`3faa0a6e0f0c3473668d238bb24c1e63`
vnc-server-4.0-12.el4_7.1.i386.rpm	`78d6dbd2e4e3ca44816ec8f42d30d266`

IA-64:
vnc-4.0-12.el4_7.1.ia64.rpm	`b66201080bb8bbb3f80628becb447e0a`
vnc-server-4.0-12.el4_7.1.ia64.rpm	`5b8a78f6d4918139a01211219a140622`

x86_64:
vnc-4.0-12.el4_7.1.x86_64.rpm	`2b382a1b75a4219091c7e0786e1b4a9d`
vnc-server-4.0-12.el4_7.1.x86_64.rpm	`e43863025ee6fe5d2827fcf027e78a3d`

(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

471777 - VNC Free Edition 4.1.3 fixes a possible security vulnerability only present in the listening viewer. VNC Server is not compromised.
480590 - CVE-2008-4770 vnc: vncviewer insufficient encoding value validation in CMsgReader::readRect

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4770
http://www.redhat.com/security/updates/classification/#moderate

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

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