3571e53040
patches for easier mirroring, to eliminate a special copy, to make www.freebsd.org/security a full copy of security.freebsd.org and be eventually be the same. For now files are just sitting there. The symlinks are missing. Discussed on: www (repository location) Discussed with: simon (so)
111 lines
4.1 KiB
Text
111 lines
4.1 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
|
|
|
|
=============================================================================
|
|
FreeBSD-SA-00:18 Security Advisory
|
|
FreeBSD, Inc.
|
|
|
|
Topic: gnapster/knapster ports allows remote users to view local files
|
|
|
|
Category: ports
|
|
Module: gnapster/knapster
|
|
Announced: 2000-05-09
|
|
Reissued: 2000-05-16
|
|
Credits: Fixed by vendor.
|
|
Knapster vulnerability pointed out by:
|
|
Tom Daniels <daniels@CERIAS.PURDUE.EDU> via BugTraq
|
|
Affects: Ports collection.
|
|
Corrected: 2000-04-29 (gnapster)
|
|
2000-05-01 (knapster)
|
|
Vendor status: Updated version released.
|
|
FreeBSD only: NO
|
|
|
|
I. Background
|
|
|
|
Gnapster and knapster are clients for the Napster file-sharing network.
|
|
|
|
II. Problem Description
|
|
|
|
The gnapster port (version 1.3.8 and earlier), and the knapster port
|
|
(version 0.9 and earlier) contain a vulnerability which allows remote
|
|
napster users to view any file on the local system which is accessible
|
|
to the user running gnapster/knapster. Gnapster and knapster do not
|
|
run with elevated privileges, so it is only the user's regular
|
|
filesystem access permissions which are involved.
|
|
|
|
Note that there may be further undiscovered bugs in these and other
|
|
napster clients leading to a similar vulnerability. System
|
|
administrators and users should exercise discretion in installing a
|
|
napster client on their system.
|
|
|
|
The gnapster/knapster ports are not installed by default, nor are they
|
|
"part of FreeBSD" as such: they are part of the FreeBSD ports
|
|
collection, which contains over 3200 third-party applications in a
|
|
ready-to-install format. The ports collection shipped with FreeBSD 4.0
|
|
contains this problem since it was discovered after the release.
|
|
|
|
FreeBSD makes no claim about the security of these third-party
|
|
applications, although an effort is underway to provide a security
|
|
audit of the most security-critical ports.
|
|
|
|
III. Impact
|
|
|
|
Remote users can view files accessible to the user running the
|
|
gnapster/knapster client.
|
|
|
|
If you have not chosen to install a napster client, then your system
|
|
is not vulnerable to this problem.
|
|
|
|
IV. Workaround
|
|
|
|
Deinstall the gnapster and/or knapster port/package, if you you have
|
|
installed them.
|
|
|
|
V. Solution
|
|
|
|
One of the following:
|
|
|
|
1) Upgrade your entire ports collection and rebuild the gnapster
|
|
and/or knapster port.
|
|
|
|
2) Reinstall a new package dated after the correction date, obtained from:
|
|
|
|
[gnapster]
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/audio/gnapster-1.3.9.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/audio/gnapster-1.3.9.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/audio/gnapster-1.3.9.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/gnapster-1.3.9.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/audio/gnapster-1.3.9.tgz
|
|
|
|
[knapster]
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/audio/knapster-0.10.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/audio/knapster-0.10.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/audio/knapster-0.10.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/knapster-0.10.tgz
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/audio/knapster-0.10.tgz
|
|
|
|
3) download a new port skeleton for the gnapster/knapster ports from:
|
|
|
|
http://www.freebsd.org/ports/
|
|
|
|
and use it to rebuild the port(s).
|
|
|
|
4) Use the portcheckout utility to automate option (3) above. The
|
|
portcheckout port is available in /usr/ports/devel/portcheckout or the
|
|
package can be obtained from:
|
|
|
|
ftp://ftp.freebsd.org/pub/FreeBSD/ports/packages/devel/portcheckout-1.0.tgz
|
|
|
|
VI. Revision History
|
|
|
|
v1.0 2000-05-09 Initial release
|
|
v1.1 2000-05-16 Update to note that knapster 0.9 is also vulnerable and
|
|
broaden warning to include all napster clients.
|
|
-----BEGIN PGP SIGNATURE-----
|
|
Version: 2.6.2
|
|
|
|
iQCVAwUBOSMRPVUuHi5z0oilAQHclAP/X+2Xdki6PUEZ/fCHdwZTLEC0kQNenOJ9
|
|
oWxWFuI4z3jpylQ3CweIoo9akx32ZzyIVHTViG3mF2BC+NRQShl1aXu2MYqy6vKc
|
|
c4R+oHxx2OeYSQo4Q8rS8Ttxa543ynXg9wLBL0vtGMq07GtVYTXpg1+Ooi+QKe2o
|
|
9JMpcxAohAQ=
|
|
=2iHQ
|
|
-----END PGP SIGNATURE-----
|