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PuTTY Two Integer Overflow Vulnerabilities
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Secunia Advisory:
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SA14333
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Release Date:
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2005-02-21
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Last Update:
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2005-02-22
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Popularity:
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23,130 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | PuTTY 0.x
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| CVE reference: | CVE-2005-0467
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Description:
Gaël Delalleau has reported two vulnerabilities in PuTTY, which can be exploited by malicious people to compromise a user's system.
1) An integer overflow in the "fxp_readdir_recv()" function in "sftp.c" can be exploited to execute arbitrary code via a malicious SFTP (SSH File Transfer Protocol) server sending a specially crafted respond to the "FXP_READDIR" command.
2) An integer overflow in the "fxp_open_recv()" function in "sftp.c" can be exploited to execute arbitrary code via a malicious SFTP server sending a specially crafted string field.
NOTE: Successful exploitation is only possible after host key verification.
The vulnerabilities have been reported in versions prior to 0.57.
Solution:
Update to version 0.57.
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Provided and/or discovered by:
Gaël Delalleau
Changelog:
2005-02-22: Added CVE reference and link to iDEFENSE advisory.
Original Advisory:
PuTTY:
http://www.chiark.greenend.org.uk/~sg...putty/wishlist/vuln-sftp-readdir.html
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-sftp-string.html
iDEFENSE:
http://www.idefense.com/application/poi/display?id=201&type=vulnerabilities
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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