Joined: 12 May 2004
|Posted: Sat Jun 14, 2008 7:26 pm Post subject: [ GLSA 200806-04 ] rdesktop: Multiple vulnerabilities
|Gentoo Linux Security Advisory
Title: rdesktop: Multiple vulnerabilities (GLSA 200806-04)
Date: June 14, 2008
Multiple vulnerabilities in rdesktop may lead to the execution of arbitrary code or a Denial of Service.
rdesktop is an open source Remote Desktop Protocol (RDP) client.
Vulnerable: < 1.6.0
Unaffected: >= 1.6.0
Architectures: All supported architectures
An anonymous researcher reported multiple vulnerabilities in rdesktop via iDefense Labs:
- An integer underflow error exists in the function iso_recv_msg() in the file iso.c which can be triggered via a specially crafted RDP request, causing a heap-based buffer overflow (CVE-2008-1801).
- An input validation error exists in the function process_redirect_pdu() in the file rdp.c which can be triggered via a specially crafted RDP redirect request, causing a BSS-based buffer overflow (CVE-2008-1802).
- An integer signedness error exists in the function xrealloc() in the file rdesktop.c which can be be exploited to cause a heap-based buffer overflow (CVE-2008-1803).
An attacker could exploit these vulnerabilities by enticing a user to connect to a malicious RDP server thereby allowing the attacker to execute arbitrary code or cause a Denial of Service.
There is no known workaround at this time.
All rdesktop users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/rdesktop-1.6.0"