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gentooGentoo FoundationGLSA-200806-04
HistoryJun 14, 2008 - 12:00 a.m.

rdesktop: Multiple vulnerabilities

2008-06-1400:00:00
Gentoo Foundation
security.gentoo.org
11

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.959 High

EPSS

Percentile

99.5%

Background

rdesktop is an open source Remote Desktop Protocol (RDP) client.

Description

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).

Impact

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.

Workaround

There is no known workaround at this time.

Resolution

All rdesktop users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/rdesktop-1.6.0"
OSVersionArchitecturePackageVersionFilename
Gentooanyallnet-misc/rdesktop< 1.6.0UNKNOWN

9.3 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.959 High

EPSS

Percentile

99.5%