rdesktop xrealloc function buffer overflow
|rdesktop-xrealloc-bo (42277)||High Risk|
rdesktop is vulnerable to a heap-based buffer overflow, caused by a signedness error in the xrealloc function. By persuading a victim to connect to a malicious RDP server, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the victim or cause the application to crash.
Upgrade to the latest version of rdesktop (CVS revision 1.162 of rdesktop.c or later), available from the SourceForge.net Repository. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- iDefense Labs PUBLIC ADVISORY: 05.07.08: Multiple Vendor rdesktop channel_process() Integer Signedness Vulnerability.
- rdesktop Web site: rdesktop: A Remote Desktop Protocol Client.
- SourceForge.net Repository: [rdesktop] Diff of /rdesktop/rdesktop.c.
- Sun Alert ID: 240708: Multiple Security Vulnerabilities in rdesktop may lead to Execution of Arbitrary Code or Denial of Service (DOS).
- ASA-2008-360: Multiple Security Vulnerabilities in rdesktop may lead to Execution of Arbitrary Code or Denial of Service (DOS) (Sun 240708)
- BID-29097: rdesktop Multiple Remote Memory Corruption Vulnerabilities
- CVE-2008-1803: Integer signedness error in the xrealloc function (rdesktop.c) in RDesktop 1.5.0 allows remote attackers to execute arbitrary code via unknown parameters that trigger a heap-based overflow. NOTE: the role of the channel_process function was not specified by the original researcher.
- DSA-1573: rdesktop -- several vulnerabilities
- GLSA-200806-04: rdesktop: Multiple vulnerabilities
- MDVSA-2008:101: Updated rdesktop packages fix vulnerabilities
- RHSA-2008-0575: Moderate: rdesktop security update
- SA30118: rdesktop Multiple Vulnerabilities
- SECTRACK ID: 1019992: rdesktop Integer Signedness Bug in channel_process() Lets Remote Users Execute Arbitrary Code
- SUSE-SA:2008:041: openwsman
- USN-646-1: rdesktop vulnerabilities
- Canonical Ubuntu 6.06 LTS
- Canonical Ubuntu 7.04
- Canonical Ubuntu 7.10
- Canonical Ubuntu 8.04 LTS
- Debian Debian Linux 4.0
- Gentoo Linux
- MandrakeSoft Mandrake Linux 2007.1
- MandrakeSoft Mandrake Linux 2007.1 X86_64
- MandrakeSoft Mandrake Linux 2008.0 X86_64
- MandrakeSoft Mandrake Linux 2008.0
- MandrakeSoft Mandrake Linux 2008.1
- MandrakeSoft Mandrake Linux 2008.1 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 4.0
- MandrakeSoft Mandrake Linux Corporate Server 4.0 X86_64
- Novell OpenSUSE 10.3
- Novell OpenSUSE 11.0
- rdesktop rdesktop 1.5.0
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5.2.z EUS
- Sun OpenSolaris 2008.5 x86
- Sun OpenSolaris 2008.5 SPARC
May 07, 2008
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.