[Full-disclosure] [ GLSA 200512-15 ] rssh: Privilege escalation

2005-12-2700:00:00

vulners.com

EPSS

0.001

Percentile

25.6%

JSON

Gentoo Linux Security Advisory GLSA 200512-15

                                        http://security.gentoo.org/

Severity: High
Title: rssh: Privilege escalation
Date: December 27, 2005
Bugs: #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          /  Vulnerable  /                      Unaffected
-------------------------------------------------------------------

1 app-shells/rssh < 2.3.0 >= 2.3.0

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:

# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=app-shells/rssh-2.3.0&quot;

References

[ 1 ] CVE-2005-3345
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3345
[ 2 ] rssh security announcement
http://www.pizzashack.org/rssh/security.shtml

Availability

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200512-15.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.