PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

BID:22809

Info

PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

Bugtraq ID: 22809
Class: Design Error
CVE:
Remote: No
Local: Yes
Published: Jan 29 2006 12:00AM
Updated: Mar 05 2007 08:25PM
Credit: Daniel Kahn Gillmor discovered this vulnerability.
Vulnerable: Debian PuTTY 0.58.5
Not Vulnerable: Debian PuTTY 0.59.1

Discussion

PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

PuTTY is prone to an insecure-file-permissions vulnerability because of a design flaw in the affected application.

An attacker could exploit this issue to access SSH private key files.

Version 0.58-5 on Debian Linux is affected.

NOTE: Although this vulnerability is reported to affect Debian systems at this stage, other Linux distributions may also be affected.

Exploit / POC

PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

An attacker can exploit this issue by using standard utilities to access the vulnerable file.

Solution / Fix

PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

Solution:
The vendor has released an update to address this issue. Please see the references for more information.

References

PuTTY Puttygen Insecure Private Key File Permissions Vulnerability

References:
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