Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
XFree86, X.org: XDM ignores requestPort setting
Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200407-05
(XFree86, X.org: XDM ignores requestPort setting)
XDM will open TCP sockets for its chooser, even if the
DisplayManager.requestPort setting is set to 0. Remote clients can use this
port to connect to XDM and request a login window, thus permiting access to
Authorized users may be able to login remotely to a machine running XDM,
even if this option is disabled in XDM's configuration. Please note that an
attacker must have a preexisting account on the machine in order to exploit
There is no known workaround at this time. All users should upgrade to the
latest available version of X.
If you are using XFree86, you should run the following:
# emerge sync
# emerge -pv ">=x11-base/xfree-4.3.0-r6"
# emerge ">=x11-base/xfree-4.3.0-r6"
If you are using X.org's X11 server, you should run the following:
# emerge sync
# emerge -pv ">=x11-base/xorg-x11-6.7.0-r1"
# emerge ">=x11-base/xorg-x11-6.7.0-r1"
Network Security Threat Level: Low
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2005 Michel Arboi
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