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[ GLSA 200512-15 ] rssh: Privilege escalation
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GLSA
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Joined: 12 May 2004
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PostPosted: Tue Dec 27, 2005 4:26 pm    Post subject: [ GLSA 200512-15 ] rssh: Privilege escalation Reply with quote

Gentoo Linux Security Advisory

Title: rssh: Privilege escalation (GLSA 200512-15)
Severity: high
Exploitable: local
Date: December 27, 2005
Bug(s): #115082
ID: 200512-15

Synopsis

Local users could gain root privileges by chrooting into arbitrary directories.

Background

rssh is a restricted shell, allowing only a few commands like scp or sftp. It is often used as a complement to OpenSSH to provide limited access to users.

Affected Packages

Package: app-shells/rssh
Vulnerable: < 2.3.0
Unaffected: >= 2.3.0
Architectures: All supported architectures


Description

Max Vozeler discovered that the rssh_chroot_helper command allows local users to chroot into arbitrary directories.

Impact

A local attacker could exploit this vulnerability to gain root privileges by chrooting into arbitrary directories.

Workaround

There is no known workaround at this time.

Resolution

All rssh users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-shells/rssh-2.3.0"


References

CVE-2005-3345
rssh security announcement


Last edited by GLSA on Sun May 07, 2006 4:59 pm; edited 1 time in total
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