Joined: 13 Jun 2003
Location: Barcelona, Spain
|Posted: Mon Feb 21, 2005 9:05 pm Post subject: [ GLSA 200502-28 ] PuTTY: Remote code execution
|Gentoo Linux Security Advisory
Title: PuTTY: Remote code execution (GLSA 200502-28)
Date: February 21, 2005
PuTTY was found to contain vulnerabilities that can allow a malicious SFTP server to execute arbitrary code on unsuspecting PSCP and PSFTP clients.
PuTTY is a popular SSH client, PSCP is a secure copy implementation, and PSFTP is a SSH File Transfer Protocol client.
Vulnerable: < 0.57
Unaffected: >= 0.57
Architectures: All supported architectures
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.
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.
There is no known workaround at this time.
All PuTTY users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/putty-0.57"
PuTTY vulnerability vuln-sftp-readdir
PuTTY vulnerability vuln-sftp-string
Last edited by GLSA on Sun May 07, 2006 4:55 pm; edited 1 time in total