Several vulnerabilities exist in the libpng library, the
most serious of which could allow a remote attacker to
execute arbitrary code on an affected system.
CERT Technical Cyber Security Alert TA04-217A
VU#388984 - libpng fails to properly check length of
transparency chunk (tRNS) data. The
Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0597 to this issue.
VU#236656 - libpng png_handle_iCCP() NULL pointer dereference
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0598 to this issue.
VU#160448 - libpng integer overflow in image height processing
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
VU#477512 - libpng png_handle_sPLT() integer overflow
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
VU#817368 - libpng png_handle_sBIT() performs insufficient
bounds checking. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned
the following name CAN-2004-0597 to this issue.
VU#286464 - libpng contains integer overflows in progressive display
image reading. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
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.
7. Acknowledgments
SCO would like to thank Chris Evans for researching and
reporting these vulnerabilities.
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SCO Security Advisory
Subject: UnixWare 7.1.4 : Multiple Vulnerabilities in libpng
Advisory number: SCOSA-2004.16
Issue date: 2004 October 07
Cross reference: sr891394 fz530149 erg712684 CAN-2004-0597 CAN-2004-0598 CAN-2004-0599 CAN-2004-0768 VU#388984 VU#236656 VU#160448 VU#477512 VU#817368 VU#286464 TA04-217A
________________________________________________________________________
______
1. Problem Description
Several vulnerabilities exist in the libpng library, the
most serious of which could allow a remote attacker to
execute arbitrary code on an affected system.
CERT Technical Cyber Security Alert TA04-217A
VU#388984 - libpng fails to properly check length of
transparency chunk (tRNS) data. The
Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0597 to this issue.
VU#236656 - libpng png_handle_iCCP() NULL pointer dereference
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0598 to this issue.
VU#160448 - libpng integer overflow in image height processing
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
VU#477512 - libpng png_handle_sPLT() integer overflow
The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
VU#817368 - libpng png_handle_sBIT() performs insufficient
bounds checking. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned
the following name CAN-2004-0597 to this issue.
VU#286464 - libpng contains integer overflows in progressive display
image reading. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the following name
CAN-2004-0599 to this issue.
2. Vulnerable Supported Versions
System Files
----------------------------------------------------------------------
UnixWare 7.1.4 /usr/include/png.h
/usr/include/pngconf.h
/usr/lib/libpng.a
/usr/lib/libpng.so.3.1.2.7
/usr/man/man.3/libpng.3
/usr/man/man.3/libpngpf.3
/usr/man/man.5/png.5
3. Solution
The proper solution is to install the latest packages.
4. UnixWare 7.1.4
4.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2004.16
4.2 Verification
MD5 (erg712684.pkg) = 78920b002aaeb097149084dc7451ce83
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:
Download erg712684.pkg to the /var/spool/pkg directory
# pkgadd -d /var/spool/pkg/erg712684.pkg
5. References
Specific references for this advisory:
http://libpng.sourceforge.net
http://www.libpng.org/pub/png
http://scary.beasts.org/security/CESA-2004-001.txt
http://www.us-cert.gov/cas/techalerts/TA04-217A.html
http://www.kb.cert.org/vuls/id/388984
http://www.kb.cert.org/vuls/id/817368
http://www.kb.cert.org/vuls/id/286484
http://www.kb.cert.org/vuls/id/477512
http://www.kb.cert.org/vuls/id/160448
http://www.kb.cert.org/vuls/id/236656
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0597
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0598
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0599
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 sr891394 fz530149
erg712684 CAN-2004-0597 CAN-2004-0598 CAN-2004-0599
CAN-2004-0768 VU#388984 VU#236656 VU#160448 VU#477512
VU#817368 VU#286464.
6. 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.
7. Acknowledgments
SCO would like to thank Chris Evans for researching and
reporting these vulnerabilities.
________________________________________________________________________
______
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