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Message-ID: <20030319153328.Q10118@sco.com>
Date: Wed, 19 Mar 2003 15:33:28 -0800
From: security@....com
To: bugtraq@...urityfocus.com, announce@...ts.caldera.com
Subject: Security Update: [CSSA-2003-SCO.7] UnixWare 7.1.1 Open UNIX 8.0.0 : Several vulnerabilities in XDR/RPC routines
To: bugtraq@...urityfocus.com announce@...ts.caldera.com
______________________________________________________________________________
SCO Security Advisory
Subject: UnixWare 7.1.1 Open UNIX 8.0.0 : Several vulnerabilities in XDR/RPC routines
Advisory number: CSSA-2003-SCO.7
Issue date: 2003 March 19
Cross reference:
______________________________________________________________________________
1. Problem Description
The implementation of xdr_array can be tricked into writing
beyond the buffers it allocated when deserializing the XDR
stream.
The xdrmem_getbytes() function in the XDR library provided by
Sun Microsystems contains an integer overflow that can lead
to improperly sized dynamic memory allocation.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
UnixWare 7.1.1 /etc/conf/pack.d/krpc/Driver_atup.o
/etc/conf/pack.d/krpc/Driver_mp.o
/usr/lib/tmp/libnsl.so
Open UNIX 8.0.0 /etc/conf/pack.d/krpc/Driver_atup.o
/etc/conf/pack.d/krpc/Driver_mp.o
/usr/lib/tmp/libnsl.so
3. Solution
The proper solution is to install the latest packages.
4. UnixWare 7.1.1
4.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2003-SCO.7
4.2 Verification
MD5 (erg712182.pkg.Z) = a696dd236701b8b643e5f37660499dbe
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
NOTE: THE uw711m2 MAINTENANCE SUPPLEMENT MUST BE INSTALLED
PRIOR TO INSTALLING THIS UPDATE.
Download erg712182.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712182.pkg.Z
# pkgadd -d /var/spool/pkg/erg712182.pkg
5. Open UNIX 8.0.0
5.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenUNIX/CSSA-2003-SCO.7
5.2 Verification
MD5 (erg712182b.pkg.Z) = 9e973d410d7a9d9f0df971b0ceb7d140
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
5.3 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
NOTE: THE ou800pk4 MAINTENANCE SUPPLEMENT MUST BE INSTALLED
PRIOR TO INSTALLING THIS UPDATE.
Download erg712182b.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712182b.pkg.Z
# pkgadd -d /var/spool/pkg/erg712182b.pkg
6. References
Specific references for this advisory:
xdr_array:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0391
http://www.cert.org/advisories/CA-2002-25.html
http://www.kb.cert.org/vuls/id/192995
http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20823
xdrmem_getbytes:
http://www.kb.cert.org/vuls/id/516825
SCO security resources:
http://www.sco.com/support/security/index.html
This security fix closes SCO incidents sr872623, sr867443,
fz526861, fz525725, erg712182, erg501642 .
7. Disclaimer
SCO is not responsible for the misuse of any of the information
we provide on this website and/or through our security
advisories. Our advisories are a service to our customers
intended to promote secure installation and use of SCO
products.
8. Acknowledgements
ISS.net discovered and researched the xdr_array vulnerability.
Riley Hassell of eEye discovered and researched the
xdrmem_getbytes vulnerability.
______________________________________________________________________________
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