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.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200408-04] PuTTY: Pre-authentication arbitrary code execution


Vulnerability Assessment Details

[GLSA-200408-04] PuTTY: Pre-authentication arbitrary code execution

Vulnerability Assessment Summary
PuTTY: Pre-authentication arbitrary code execution

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200408-04
(PuTTY: Pre-authentication arbitrary code execution)


PuTTY contains a vulnerability permiting 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 a possible hacker 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.

References:
http://www.coresecurity.com/common/showdoc.php?idx=417&idxseccion=10
http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html


Solution:
All PuTTY users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=net-misc/putty-0.55"
# emerge ">=net-misc/putty-0.55"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

64MB USB 2.0 Flash Memory Stick Thumb Drive PC LAPTOP Storage V2X3 E7C6 C7T3
$1.94
64MB USB 2.0 Flash Memory Stick Thumb Drive PC LAPTOP Storage V2X3 E7C6 C7T3 picture SAMSUNG 4GB DDR3 RAM MEMORY 2Rx8 PC3-12800S M471B5273CH0-CK9
$14.99
 SAMSUNG 4GB DDR3 RAM MEMORY 2Rx8 PC3-12800S M471B5273CH0-CK9 pictureDell - XPS Desktop - Intel Core i7 - 8GB Memory - 1TB Hard Drive Black
$680.49
Dell - XPS Desktop - Intel Core i7 - 8GB Memory - 1TB Hard Drive Black picture512GB Class Golden Model Usb 2.0 Memory Stick Flash pen Drive
$90.0
512GB Class Golden Model Usb 2.0 Memory Stick Flash pen Drive picture


Discussions

No Discussions have been posted on this vulnerability.