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Vulnerability Details : CVE-2009-3720

The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.
Publish Date : 2009-11-03 Last Update Date : 2021-06-06
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-3720 The Red Hat Security Response Team has rated this issue as having moderate security impact in Python, a future update may address this flaw. If a system has PyXML installed, Python will use PyXML for expat-related functions and is then not vulnerable to the issue.
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P 2009-08-21 2009-01-17
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @ cvedetails.com

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-3720 oval:org.opensuse.security:def:20093720 unix
DEPRECATED: ELSA-2011-0492 -- python security update (moderate) oval:org.mitre.oval:def:28060 unix
DSA-1977 python2.4 python2.5 -- several vulnerabilities oval:org.mitre.oval:def:7152 unix
DSA-1977-1 python - several vulnerabilities oval:org.mitre.oval:def:18064 unix
ELSA-2009:1625: expat security update (Moderate) oval:org.mitre.oval:def:22880 unix
ELSA-2010:0002: PyXML security update (Moderate) oval:org.mitre.oval:def:23002 unix
ELSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:23229 unix
expat DoS oval:org.apache.httpd:def:20093720
Expat UTF-8 Character XML Parsing Remote Denial of Service Vulnerability oval:org.mitre.oval:def:7112 unix
HP-UX Apache Web Server, Remote Information Disclosure, Cross-Site Scripting (XSS), Denial of Service (DoS) oval:org.mitre.oval:def:12719 unix
RHSA-2009:1572: 4Suite security update (Moderate) oval:com.redhat.rhsa:def:20091572 unix
RHSA-2009:1625 -- expat security update (Moderate) oval:org.mitre.oval:def:29347 unix
RHSA-2009:1625: expat security update (Moderate) oval:com.redhat.rhsa:def:20091625 unix
RHSA-2010:0002: PyXML security update (Moderate) oval:com.redhat.rhsa:def:20100002 unix
RHSA-2010:0002: PyXML security update (Moderate) oval:org.mitre.oval:def:21948 unix
RHSA-2011:0491: python security update (Moderate) oval:com.redhat.rhsa:def:20110491 unix
RHSA-2011:0492: python security update (Moderate) oval:com.redhat.rhsa:def:20110492 unix
RHSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:21923 unix
The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and o... oval:org.mitre.oval:def:11019 unix
VMware ESXi and ESX updates to third party library and ESX Service Console oval:org.mitre.oval:def:20637 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-3720

# Product Type Vendor Product Version Update Edition Language
No vulnerable product found. If the vulnerability is created recently it may take a few days to gather vulnerable products list and other information like cvss scores. Please check again in a few days.

- References For CVE-2009-3720

https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210603 svn commit: r1075360 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210606 svn commit: r1075467 [2/2] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210606 svn commit: r1075467 [1/2] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073140 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073139 [6/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210603 svn commit: r1075360 [1/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073149 [7/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20190815 svn commit: r1048742 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20200401 svn commit: r1058587 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20200401 svn commit: r1058587 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073143 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20200401 svn commit: r1058586 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1888194 [6/13] - /httpd/site/trunk/content/security/json/
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073146 [2/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
http://www.openwall.com/lists/oss-security/2009/10/26/3
MLIST [oss-security] 20091026 Re: CVE Request -- expat [was: Re: Regarding expat bug 1990430]
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20190815 svn commit: r1048743 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
http://svn.python.org/view?view=rev&revision=74429 CONFIRM
http://www.openwall.com/lists/oss-security/2009/10/23/6
MLIST [oss-security] 20091023 Re: CVE Request -- expat [was: Re: Regarding expat bug 1990430]
http://www.openwall.com/lists/oss-security/2009/10/22/9
MLIST [oss-security] 20091022 Re: Regarding expat bug 1990430
http://www.openwall.com/lists/oss-security/2009/10/28/3
MLIST [oss-security] 20091028 Re: CVE Request -- expat [was: Re: Regarding expat bug 1990430]
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073140 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20200401 svn commit: r1058586 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20190815 svn commit: r1048742 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20190815 svn commit: r1048743 [2/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11019
OVAL oval:org.mitre.oval:def:11019
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12719
OVAL oval:org.mitre.oval:def:12719
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7112
OVAL oval:org.mitre.oval:def:7112
http://marc.info/?l=bugtraq&m=130168502603566&w=2
HP HPSBUX02645
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.html
FEDORA FEDORA-2010-17732
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051442.html
FEDORA FEDORA-2010-17807
http://secunia.com/advisories/42338
SECUNIA 42338
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405.html
FEDORA FEDORA-2010-17819
http://www.vupen.com/english/advisories/2010/3035
VUPEN ADV-2010-3035
http://www.vupen.com/english/advisories/2010/3053
VUPEN ADV-2010-3053
http://www.vupen.com/english/advisories/2010/3061
VUPEN ADV-2010-3061
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.html
FEDORA FEDORA-2010-17762
http://secunia.com/advisories/42326
SECUNIA 42326
http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.html
FEDORA FEDORA-2010-17720
http://www.redhat.com/support/errata/RHSA-2011-0896.html
REDHAT RHSA-2011:0896
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026
SLACKWARE SSA:2011-041-02
http://secunia.com/advisories/43300
SECUNIA 43300
http://www.vupen.com/english/advisories/2011/0359
VUPEN ADV-2011-0359
http://secunia.com/advisories/41701
SECUNIA 41701
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
SUSE SUSE-SR:2010:014
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
SUSE SUSE-SR:2010:013
http://secunia.com/advisories/38050
SECUNIA 38050
http://www.redhat.com/support/errata/RHSA-2010-0002.html
REDHAT RHSA-2010:0002
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
SUSE SUSE-SR:2010:012
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
SUSE SUSE-SR:2010:011
http://www.vupen.com/english/advisories/2010/1107
VUPEN ADV-2010-1107
http://www.vupen.com/english/advisories/2010/0896
VUPEN ADV-2010-0896
http://www.ubuntu.com/usn/USN-890-6
UBUNTU USN-890-6
http://secunia.com/advisories/39478
SECUNIA 39478
http://secunia.com/advisories/38832
SECUNIA 38832
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
MLIST [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates
http://secunia.com/advisories/38794
SECUNIA 38794
http://www.vupen.com/english/advisories/2010/0528
VUPEN ADV-2010-0528
http://secunia.com/advisories/38834
SECUNIA 38834
http://secunia.com/advisories/38231
SECUNIA 38231
http://secunia.com/advisories/37925
SECUNIA 37925
http://www.ubuntu.com/usn/USN-890-1
UBUNTU USN-890-1
http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1
SUNALERT 273630
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg01274.html
FEDORA FEDORA-2009-12753
http://www.securitytracker.com/id?1023160
SECTRACK 1023160
http://secunia.com/advisories/37537
SECUNIA 37537
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html
FEDORA FEDORA-2009-12690
http://www.mandriva.com/security/advisories?name=MDVSA-2009:219
MANDRIVA MDVSA-2009:219
http://secunia.com/advisories/37324
SECUNIA 37324
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html
FEDORA FEDORA-2009-12737
https://bugzilla.redhat.com/show_bug.cgi?id=531697 CONFIRM
http://www.mandriva.com/security/advisories?name=MDVSA-2009:216
MANDRIVA MDVSA-2009:216
http://www.mandriva.com/security/advisories?name=MDVSA-2009:220
MANDRIVA MDVSA-2009:220
http://www.mandriva.com/security/advisories?name=MDVSA-2009:212
MANDRIVA MDVSA-2009:212
http://www.mandriva.com/security/advisories?name=MDVSA-2009:215
MANDRIVA MDVSA-2009:215
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
SUSE SUSE-SR:2009:018
http://www.mandriva.com/security/advisories?name=MDVSA-2009:218
MANDRIVA MDVSA-2009:218
http://www.mandriva.com/security/advisories?name=MDVSA-2009:211
MANDRIVA MDVSA-2009:211
http://www.mandriva.com/security/advisories?name=MDVSA-2009:217
MANDRIVA MDVSA-2009:217
http://www.openwall.com/lists/oss-security/2009/09/06/1
MLIST [oss-security] 20090906 Re: Re: expat bug 1990430
http://www.openwall.com/lists/oss-security/2009/08/26/3
MLIST [oss-security] 20090826 Re: expat bug 1990430
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=log CONFIRM
http://www.openwall.com/lists/oss-security/2009/08/27/6
MLIST [oss-security] 20090827 Re: Re: expat bug 1990430
http://www.openwall.com/lists/oss-security/2009/10/22/5
MLIST [oss-security] 20091022 Regarding expat bug 1990430
http://www.openwall.com/lists/oss-security/2009/10/23/2
MLIST [oss-security] 20091022 Re: Re: Regarding expat bug 1990430
http://sourceforge.net/tracker/index.php?func=detail&aid=1990430&group_id=10127&atid=110127
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patch CONFIRM
http://mail.python.org/pipermail/expat-bugs/2009-January/002781.html
MLIST [expat-bugs] 20090117 [ expat-Bugs-1990430 ] Parser crash with specially formatted UTF-8 sequences
http://www.openwall.com/lists/oss-security/2009/08/26/4
MLIST [oss-security] 20090826 Re: Re: expat bug 1990430
http://www.openwall.com/lists/oss-security/2009/08/21/2
MLIST [oss-security] 20090821 expat bug 1990430
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
https://bugs.gentoo.org/show_bug.cgi?id=280615 CONFIRM
https://lists.apache.org/thread.html/[email protected]%3Ccvs.httpd.apache.org%3E
MLIST [httpd-cvs] 20210606 svn commit: r1075470 [3/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

- Metasploit Modules Related To CVE-2009-3720

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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