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AUSCERT External Security Bulletin Redistribution
ESB-2005.0207 -- Sun Alert Notification 57737
Security Vulnerabilities in Solaris AnswerBook2 Documentation
9 March 2005
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AusCERT Security Bulletin Summary
---------------------------------
Product: Answerbook2 versions 1.4.4 and prior
Publisher: Sun Microsystems
Operating System: Solaris 8 and prior
Impact: Cross-site Scripting
Access: Remote/Unauthenticated
CVE Names: CAN-2005-0549 CAN-2005-0548
Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57737-1
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Sun(sm) Alert Notification
* Sun Alert ID: 57737
* Synopsis: Security Vulnerabilities in Solaris AnswerBook2
Documentation
* Category: Security
* Product: Answerbook2
* BugIDs: 6228248, 6228257
* Avoidance: Workaround
* State: Resolved
* Date Released: 07-Mar-2005
* Date Closed: 07-Mar-2005
* Date Modified:
1. Impact Two vulnerabilities have been discovered in the AnswerBook2
Server related to malicious HTML tags.
1. The AnswerBook2 Search function dynamically generates web pages
which may allow the execution of scripts or present malicious HTML to
a user. Users may unintentionally execute scripts in their browser
written by a remote unprivileged user if they follow untrusted
links/URIs in web pages, mail messages, or newsgroup postings which
link to AnswerBook2 search results. By following these untrusted
links/URIs, the remote attacker may be able to execute commands with
the privileges of the user who accessed the link/URI.
2. The "View Log Files" function in the AnswerBook2 browser-based
admin interface (GUI) may be vulnerable to cross-site scripting
attacks. Due to this vulnerability, the AnswerBook2 administrator
accessing the "View Log Files" functionality may unintentionally
execute scripts written by an unprivileged local or remote user. The
commands executed would run with the privileges of the user utilizing
the AnswerBook2 browser-based admin GUI, who may be privileged.
This issue is also described in the following documents:
[2]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0548
[3]http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0549
For further information on malicious HTML tags, cross site scripting,
and web script vulnerabilities, see the following URLs:
[4]http://www.cert.org/archive/pdf/cross_site_scripting.pdf
[5]http://www.cert.org/tech_tips/malicious_code_FAQ.html
[6]http://www.cert.org/advisories/CA-2000-02.html
Sun acknowledges, with thanks, Thomas Liam Romanis for bringing this
issue to our attention.
2. Contributing Factors This issue can occur in the following
releases:
SPARC Platform
* AnswerBook2 Documentation Server versions 1.4.4 or earlier (for
Solaris 7 and 8)
x86 Platform
* AnswerBook2 Documentation Server versions 1.4.4 or earlier (for
Solaris 7 and 8)
Notes:
1. AnswerBook2 is no longer supported as of Solaris 9, therefore
Solaris 9 and Solaris 10 are not affected.
2. The "View Log Files" vulnerability only exists when using the
AnswerBook2 Admin GUI interface, i.e. the following URL path on an
AnswerBook2 server:
[7]http://ab2server.hostname:8888/ab2/@Ab2Admin
To determine the version of the currently installed AnswerBook2
Server, the following command can be run:
$ grep SUNW_PRODVERS /var/sadm/pkg/SUNWab2[rsu]/pkginfo
/var/sadm/pkg/SUNWab2r/pkginfo:SUNW_PRODVERS=1.4.4
/var/sadm/pkg/SUNWab2s/pkginfo:SUNW_PRODVERS=1.4.4
/var/sadm/pkg/SUNWab2u/pkginfo:SUNW_PRODVERS=1.4.4
3. Symptoms There are no reliable symptoms that would indicate the
described issues have been exploited.
Solution Summary [8]Top
4. Relief/Workaround Sites which have configured AnswerBook2
Documentation Servers should disable AnswerBook2 and instead refer to
Sun documentation at the Sun Product Documentation web site
[9]http://docs.sun.com or view the documentation on the Solaris
Documentation CD.
To disable the AnswerBook2 Documentation Server, the following
commands can be run as "root" user:
# /usr/lib/ab2/bin/ab2admin -o stop
# /usr/lib/ab2/bin/ab2admin -o autostart_no
To avoid the "View Log Files" vulnerability, do not use the
AnswerBook2 Admin GUI to view the AnswerBook2 log files; the
ab2admin(1M) command should be used instead, as in the following
example:
$ /usr/lib/ab2/bin/ab2admin -o view_access [-m server_name] [-p server_port
]
5. Resolution Please see the "Relief/Workaround" section for the
resolution to this issue.
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved.
References
1. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57737-1#top
2. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0548
3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0549
4. http://www.cert.org/archive/pdf/cross_site_scripting.pdf
5. http://www.cert.org/tech_tips/malicious_code_FAQ.html
6. http://www.cert.org/advisories/CA-2000-02.html
7. http://ab2server.hostname:8888/ab2/@Ab2Admin
8. http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-57737-1#top
9. http://docs.sun.com/
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