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)
99 lines
3.5 KiB
Text
99 lines
3.5 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
|
|
|
|
=============================================================================
|
|
FreeBSD-SA-02:17 Security Advisory
|
|
FreeBSD, Inc.
|
|
|
|
Topic: mod_frontpage port contains exploitable buffer overflow
|
|
|
|
Category: ports
|
|
Module: mod_frontpage
|
|
Announced: 2002-03-12
|
|
Credits: Martin Blapp <mbr@freebsd.org>
|
|
Affects: mod_frontpage port prior to version mod_portname-1.6.1
|
|
Corrected: 2002-02-05 16:18:42 2002 UTC
|
|
FreeBSD only: NO
|
|
|
|
I. Background
|
|
|
|
mod_frontpage is a replacecement for Microsoft's frontpage apache
|
|
patch to support FP extensions. It is installed as a DSO module.
|
|
|
|
II. Problem Description
|
|
|
|
Affected versions of the mod_frontpage port contains several
|
|
exploitable buffer overflows in the fpexec wrapper, which is installed
|
|
setuid root.
|
|
|
|
The mod_frontpage port is not installed by default, nor is it "part of
|
|
FreeBSD" as such: it is part of the FreeBSD ports collection, which
|
|
contains over 6000 third-party applications in a ready-to-install
|
|
format. The ports collection shipped with FreeBSD 4.5 contains this
|
|
security 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
|
|
|
|
A local attacker may obtain superuser privileges by exploiting the
|
|
buffer overflow bugs in fpexec.
|
|
|
|
IV. Workaround
|
|
|
|
1) Deinstall the mod_frontpage ports/packages if you have them installed.
|
|
|
|
V. Solution
|
|
|
|
Do one of the following:
|
|
|
|
1) Upgrade your entire ports collection and rebuild the port.
|
|
|
|
2) Deinstall the old package and install a new package dated after the
|
|
correction date, obtained from the following directories:
|
|
|
|
[i386]
|
|
ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/www/
|
|
|
|
[alpha]
|
|
Packages are not automatically generated for the alpha architecture at
|
|
this time due to lack of build resources.
|
|
|
|
NOTE: It may be several days before updated packages are available.
|
|
|
|
3) Download a new port skeleton for the mod_frontpage 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/Latest/portcheckout.tgz
|
|
|
|
VI. Correction details
|
|
|
|
The following list contains the $FreeBSD$ revision numbers of each
|
|
file that was corrected in the FreeBSD source.
|
|
|
|
Path Revision
|
|
- -------------------------------------------------------------------------
|
|
ports/www/mod_frontpage/Makefile 1.7
|
|
ports/www/mod_frontpage/distinfo 1.4
|
|
ports/www/mod_frontpage/files/patch-Makefile.PL 1.3
|
|
ports/www/mod_frontpage/files/patch-Makefile.in 1.1
|
|
ports/www/mod_frontpage/files/patch-mod_frontpage.c 1.4
|
|
- -------------------------------------------------------------------------
|
|
-----BEGIN PGP SIGNATURE-----
|
|
Version: GnuPG v1.0.6 (FreeBSD)
|
|
Comment: For info see http://www.gnupg.org
|
|
|
|
iQCVAwUBPI4O11UuHi5z0oilAQF43wQAlp8eUBSGRLb1ggNxDVwzvB40ZEOWrIB0
|
|
6P3xIvUW6bFXsHgrBm+WuF7evUm8K85hs1QPp4nDUSdgWArxP9izdSXMKsJ0rtkA
|
|
RAeDMgpMOsDoQaKl9ljDVFbf9xs3hTO6S3UsRaRuQeTvcqhsKRZNbUvOVrAULEOG
|
|
GZ6n2CFh+Rk=
|
|
=sCnv
|
|
-----END PGP SIGNATURE-----
|