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[ GLSA 200703-13 ] SSH Communications Security's Secure Shell Server: SFTP privilege escalati on
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PostPosted: Wed Mar 14, 2007 10:26 pm    Post subject: [ GLSA 200703-13 ] SSH Communications Security's Secure Shel Reply with quote

Gentoo Linux Security Advisory

Title: SSH Communications Security's Secure Shell Server: SFTP privilege escalation (GLSA 200703-13)
Severity: normal
Exploitable: remote
Date: March 14, 2007
Bug(s): #168584
ID: 200703-13

Synopsis

The SSH Secure Shell Server SFTP function is vulnerable to privilege escalation.

Background

The SSH Secure Shell Server from SSH Communications Security (www.ssh.com) is a commercial SSH implementation available free for non-commercial use.

Affected Packages

Package: net-misc/ssh
Vulnerable: < 4.3.7
Architectures: All supported architectures


Description

The SSH Secure Shell Server contains a format string vulnerability in the SFTP code that handles file transfers (scp2 and sftp2). In some situations, this code passes the accessed filename to the system log. During this operation, an unspecified error could allow uncontrolled stack access.

Impact

An authenticated system user may be able to exploit this vulnerability to bypass command restrictions, or run commands as another user.

Workaround

There is no known workaround at this time.

Resolution

This package is currently masked, there is no upgrade path for the 3.2.x version, and a license must be purchased in order to update to a non-vulnerable version. Because of this, we recommend unmerging this package:
Code:
# emerge --ask --verbose --unmerge net-misc/ssh


References

CVE-2006-0705
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