PuTTY: Remote code execution

PuTTY: Remote code execution PuTTY was found to contain vulnerabilities that can allow a malicious SFTP server to execute arbitrary code on unsuspecting PSCP and PSFTP clients. Putty February 21, 2005 February 21, 2005: 01 82753 remote 0.57 0.57

PuTTY is a popular SSH client, PSCP is a secure copy implementation, and PSFTP is a SSH File Transfer Protocol client.

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 CAN-2005-0467 iDEFENSE Advisory vorlon078 vorlon078 lewk