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

Knoppix 7.2.0 Live Linux Bootable Startup CD (Runs form CD) +Free Retro Linux CD
$11.95
Knoppix 7.2.0 Live Linux Bootable Startup CD (Runs form CD) +Free Retro Linux CD pictureLatest KNOPPIX LINUX Operating system PC repair Bootable live system Windows USB
$17.59
Latest KNOPPIX LINUX Operating system PC repair Bootable live system Windows USB pictureKNOPPIX LINUX - NEW v8.1 Live DVD & 16GB USB Flash Drive with Persistence
$17.99
KNOPPIX LINUX - NEW v8.1 Live DVD & 16GB USB Flash Drive with Persistence pictureKnoppix Linux Live USB 32 64 bit Debian GNU Apache MySQL w/setup guide
$8.0
Knoppix Linux Live USB 32 64 bit Debian GNU Apache MySQL w/setup guide picture


Discussions

No Discussions have been posted on this vulnerability.