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AUSCERT External Security Bulletin Redistribution
ESB-2006.0002 -- [UNIX/Linux][SCO]
New cpio patches fix multiple vulnerabilities
4 January 2006
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AusCERT Security Bulletin Summary
---------------------------------
Product: cpio
Publisher: SCO
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact: Overwrite Arbitrary Files
Inappropriate Access
Access: Existing Account
CVE Names: CVE-2005-1229 CVE-2005-1111
Ref: ESB-2005.0468
Original Bulletin: ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.2/SCOSA-2006.2.txt
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______________________________________________________________________________
SCO Security Advisory
Subject: OpenServer 5.0.7 OpenServer 6.0.0 : cpio Multiple Vulnerabilities
Advisory number: SCOSA-2006.2
Issue date: 2006 January 03
Cross reference: sr893933 fz532332 erg712853
sr894845 fz532911 erg712912
CVE-2005-1111 CVE-2005-1229
______________________________________________________________________________
1. Problem Description
A race condition in cpio allows local users to modify
permissions of arbitrary files via a hard link attack on a file
while it is being decompressed, whose permissions are changed by
cpio after the decompression is complete.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2005-1111 to this issue.
A directory traversal vulnerability allows remote attackers to
write to arbitrary directories via a .. (dot dot) in a cpio
file.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2005-1229 to this issue
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
OpenServer 5.0.7 /usr/gnu/bin/gcpio
OpenServer 6.0.0 /usr/bin/cpio, /usr/bin/cpio.osr5
3. Solution
The proper solution is to install the latest packages.
4. OpenServer 5.0.7
4.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.2
4.2 Verification
MD5 (p532332.507_vol.tar) = 416ce0e1f6ba629eadc883ca1283fba7
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:
1) Download p532332.507_vol.tar file to a directory.
2) Extract VOL* files.
# tar xvf p532332.507_vol.tar
3) Run the custom command, specify an install from media images,
and specify the directory as the location of the images.
5. OpenServer 6.0.0
5.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.2
5.2 Verification
MD5 (p532911.600_vol.tar) = 2224558523782dbae0b529fb0cf0ff37
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:
1) Download p532911.600_vol.tar file to a directory.
2) Extract VOL* files.
# tar xvf p532911.600_vol.tar
3) Run the custom command, specify an install from media images,
and specify the directory as the location of the images.
6. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1111
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1229
http://xforce.iss.net/xforce/xfdb/20204
SCO security resources:
http://www.sco.com/support/security/index.html
SCO security advisories via email
http://www.sco.com/support/forums/security.html
This security fix closes SCO incidents sr893933 fz532332
erg712853 sr894845 fz532911 erg712912.
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. Acknowledgments
The SCO Group would like to thank Imran Ghory for the initial
report.
______________________________________________________________________________
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