GLSA Bodhisattva
Joined: 13 Jun 2003 Posts: 4087 Location: Dresden, Germany
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Posted: Mon Feb 21, 2005 9:05 pm Post subject: [ GLSA 200502-28 ] PuTTY: Remote code execution |
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Gentoo Linux Security Advisory
Title: PuTTY: Remote code execution (GLSA 200502-28)
Severity: normal
Exploitable: remote
Date: February 21, 2005
Bug(s): #82753
ID: 200502-28
Synopsis
PuTTY was found to contain vulnerabilities that can allow a malicious SFTP server to execute arbitrary code on unsuspecting PSCP and PSFTP clients.
Background
PuTTY is a popular SSH client, PSCP is a secure copy implementation, and PSFTP is a SSH File Transfer Protocol client.
Affected Packages
Package: net-misc/putty
Vulnerable: < 0.57
Unaffected: >= 0.57
Architectures: All supported architectures
Description
Two vulnerabilities have been discovered in the PSCP and PSFTP clients, which can be triggered by the SFTP server itself. These issues are caused by the improper handling of the FXP_READDIR response, along with other string fields.
Impact
An attacker can setup a malicious SFTP server that would send these malformed responses to a client, potentially allowing the execution of arbitrary code on their system.
Workaround
There is no known workaround at this time.
Resolution
All PuTTY users should upgrade to the latest version: Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/putty-0.57" |
References
PuTTY vulnerability vuln-sftp-readdir
PuTTY vulnerability vuln-sftp-string
CAN-2005-0467
iDEFENSE Advisory
Last edited by GLSA on Sun May 07, 2006 4:55 pm; edited 1 time in total |
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