102 lines
3.6 KiB
Text
102 lines
3.6 KiB
Text
|
-----BEGIN PGP SIGNED MESSAGE-----
|
||
|
|
|
||
|
|
=============================================================================
|
||
|
|
FreeBSD-SA-01:23 Security Advisory
|
||
|
|
FreeBSD, Inc.
|
||
|
|
|
||
|
|
Topic: icecast port contains remote vulnerability
|
||
|
|
|
||
|
|
Category: ports
|
||
|
|
Module: icecast
|
||
|
|
Announced: 2001-03-12
|
||
|
|
Credits: |CyRaX| <cyrax@pkcrew.org>
|
||
|
|
Affects: Ports collection prior to the correction date.
|
||
|
|
Corrected: 2001-03-10
|
||
|
|
Vendor status: Unresponsive
|
||
|
|
FreeBSD only: NO
|
||
|
|
|
||
|
|
I. Background
|
||
|
|
|
||
|
|
icecast is a server for streaming MP3 audio.
|
||
|
|
|
||
|
|
II. Problem Description
|
||
|
|
|
||
|
|
The icecast software, versions prior to 1.3.7_1, contains multiple
|
||
|
|
format string vulnerabilities, which allow a remote attacker to
|
||
|
|
execute arbitrary code as the user running icecast, usually the root
|
||
|
|
user.
|
||
|
|
|
||
|
|
There are a number of other potential abuses of format strings which
|
||
|
|
may or may not pose security risks, but have not currently been
|
||
|
|
audited.
|
||
|
|
|
||
|
|
The icecast port is not installed by default, nor is it "part of
|
||
|
|
FreeBSD" as such: it is part of the FreeBSD ports collection, which
|
||
|
|
contains nearly 4700 third-party applications in a ready-to-install
|
||
|
|
format. The ports collections shipped with FreeBSD 3.5.1 and 4.2
|
||
|
|
contain this problem since it was discovered after the releases.
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
Arbitrary remote users can execute arbitrary code on the local system
|
||
|
|
as the user running icecast, usually the root user.
|
||
|
|
|
||
|
|
If you have not chosen to install the icecast port/package, then your
|
||
|
|
system is not vulnerable to this problem.
|
||
|
|
|
||
|
|
IV. Workaround
|
||
|
|
|
||
|
|
Deinstall the icecast port/package, if you have installed it.
|
||
|
|
|
||
|
|
V. Solution
|
||
|
|
|
||
|
|
Consider running the icecast software as a non-privileged user to
|
||
|
|
minimize the impact of further security vulnerabilities in this
|
||
|
|
software.
|
||
|
|
|
||
|
|
To upgrade icecast, choose one of the following options:
|
||
|
|
|
||
|
|
1) Upgrade your entire ports collection and rebuild the icecast port.
|
||
|
|
|
||
|
|
2) Deinstall the old package and install a new package dated after the
|
||
|
|
correction date, obtained from:
|
||
|
|
|
||
|
|
[i386]
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/audio/icecast-1.3.7_1.tgz
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/icecast-1.3.7_1.tgz
|
||
|
|
|
||
|
|
NOTE: It may be several days before updated packages are available
|
||
|
|
|
||
|
|
[alpha]
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/audio/icecast-1.3.7_1.tgz
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/audio/icecast-1.3.7_1.tgz
|
||
|
|
|
||
|
|
3) download a new port skeleton for the icecast port from:
|
||
|
|
|
||
|
|
http://www.freebsd.org/ports/
|
||
|
|
|
||
|
|
and use it to rebuild the port.
|
||
|
|
|
||
|
|
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/i386/packages-4-stable/devel/portcheckout-2.0.tgz
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/devel/portcheckout-2.0.tgz
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz
|
||
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/devel/portcheckout-2.0.tgz
|
||
|
|
-----BEGIN PGP SIGNATURE-----
|
||
|
|
Version: GnuPG v1.0.4 (FreeBSD)
|
||
|
|
Comment: For info see http://www.gnupg.org
|
||
|
|
|
||
|
|
iQCVAwUBOq1b9lUuHi5z0oilAQF0VQQAgjsvLSPtZ1pu6OtkGxuMJhCmmeCvFJvL
|
||
|
|
4szsF1csrFrXhaH7z1VjJP8r/Q2NBzWcS3qujkhGRObsGGyvAJKk7QVrqnjXV3gD
|
||
|
|
rgLnphjNlKt0VuXafxXwTT8YTxoCbzOHy23aa0KaRWoCAVcVi4AAZs4XHEUgU+Ov
|
||
|
|
lWOyEgxUBEk=
|
||
|
|
=WM3Y
|
||
|
|
-----END PGP SIGNATURE-----
|