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Red Hat EL 5: RHSA-2008:0575-01 Moderate: rdesktop Crash Risk

red hat
Calendar Grey July 24, 2008
Dist Redhat Esm H88
A recent rdesktop patch for Red Hat addresses integer problems that could result in possible crashes or unauthorized code execution.
An updated rdesktop package that fixes a security issue is now available for Red Hat Enterprise Linux 5.An integer underflow and integer signedness issue were discovered in the r...

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

Summary

rdesktop is an open source client for Microsoft Windows NT Terminal Server and Microsoft Windows 2000 and 2003 Terminal Services, capable of natively using the Remote Desktop Protocol (RDP) to present the user's NT desktop. No additional server extensions are required.
An integer underflow and integer signedness issue were discovered in the rdesktop. If an attacker could convince a victim to connect to a malicious RDP server, the attacker could cause the victim's rdesktop to crash or, possibly, execute an arbitrary code. (CVE-2008-1801, CVE-2008-1803)
Users of rdesktop should upgrade to these updated packages, which contain a backported patches to resolve these issues.

Topics%20covered

Topics Covered

security advisory moderate Red Hat Enterprise Linux remote desktop rdesktop crash risk integer issue

References

https://www.cve.org/CVERecord?id=CVE-2008-1801 https://www.cve.org/CVERecord?id=CVE-2008-1803 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: rdesktop-1.4.1-6.i386.rpm rdesktop-debuginfo-1.4.1-6.i386.rpm
x86_64: rdesktop-1.4.1-6.x86_64.rpm rdesktop-debuginfo-1.4.1-6.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: rdesktop-1.4.1-6.i386.rpm rdesktop-debuginfo-1.4.1-6.i386.rpm
ia64: rdesktop-1.4.1-6.ia64.rpm rdesktop-debuginfo-1.4.1-6.ia64.rpm
ppc: rdesktop-1.4.1-6.ppc.rpm rdesktop-debuginfo-1.4.1-6.ppc.rpm
s390x: rdesktop-1.4.1-6.s390x.rpm rdesktop-debuginfo-1.4.1-6.s390x.rpm
x86_64: rdesktop-1.4.1-6.x86_64.rpm rdesktop-debuginfo-1.4.1-6.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#package


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2008:0575-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0575.html
Issue date: 2008-07-24

Topic

An updated rdesktop package that fixes a security issue is now available for Red Hat Enterprise Linux 5.

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

Topics%20covered

Topics Covered

security advisory moderate Red Hat Enterprise Linux remote desktop rdesktop crash risk integer issue

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

445825 - CVE-2008-1801 rdesktop: iso_recv_msg() Integer Underflow Vulnerability

445829 - CVE-2008-1803 rdesktop: channel_process() Integer Signedness Vulnerability

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