GLSA Bodhisattva
Joined: 13 Jun 2003 Posts: 4087 Location: Dresden, Germany
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Posted: Thu Aug 05, 2004 12:51 pm Post subject: [ GLSA 200408-04 ] PuTTY: Pre-authentication arbitrary code |
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Gentoo Linux Security Advisory
Title: PuTTY: Pre-authentication arbitrary code execution (GLSA 200408-04)
Severity: normal
Exploitable: remote
Date: August 05, 2004
Updated: May 22, 2006
Bug(s): #59383
ID: 200408-04
Synopsis
PuTTY contains a vulnerability allowing a SSH server to execute arbitrary
code on the connecting client.
Background
PuTTY is a free implementation of Telnet and SSH for Win32 and Unix
platforms, along with an xterm terminal emulator.
Affected Packages
Package: net-misc/putty
Vulnerable: <= 0.54
Unaffected: >= 0.55
Architectures: All supported architectures
Description
PuTTY contains a vulnerability allowing a malicious server to execute
arbitrary code on the connecting client before host key verification.
Impact
When connecting to a server using the SSH2 protocol an attacker is able
to execute arbitrary code with the permissions of the user running
PuTTY by sending specially crafted packets to the client during the
authentication process but before host key verification.
Workaround
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version of PuTTY.
Resolution
All PuTTY users should upgrade to the latest version:
Code: | # emerge sync
# emerge -pv ">=net-misc/putty-0.55"
# emerge ">=net-misc/putty-0.55" |
References
Corelabs Advisory
PuTTY ChangeLog
CVE-2004-1440
Last edited by GLSA on Fri May 09, 2014 4:17 am; edited 6 times in total |
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