Vulnerability Details : CVE-2009-1955
The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.
Vulnerability category: Denial of service
Threat overview for CVE-2009-1955
Top countries where our scanners detected CVE-2009-1955
Top open port discovered on systems with this issue
5555
IPs affected by CVE-2009-1955 123
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2009-1955!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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Exploit prediction scoring system (EPSS) score for CVE-2009-1955
Probability of exploitation activity in the next 30 days: 16.88%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 96 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2009-1955
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2009-1955
-
The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.Assigned by: nvd@nist.gov (Primary)
References for CVE-2009-1955
-
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f@%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b@%3Ccvs.httpd.apache.org%3E
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 sMailing List;Third Party Advisory
-
http://secunia.com/advisories/35797
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://marc.info/?l=bugtraq&m=129190899612998&w=2
'[security bulletin] HPSBUX02612 SSRT100345 rev.1 - HP-UX Apache-based Web Server, Local Information' - MARCMailing List
-
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
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_Mailing List;Patch
-
http://www.vupen.com/english/advisories/2009/3184
Webmail: access your OVH emails on ovhcloud.com | OVHcloudBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53@%3Ccvs.httpd.apache.org%3E
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_Mailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
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_Mailing List;Patch
-
http://www.securityfocus.com/archive/1/506053/100/0/threaded
Broken Link;Third Party Advisory;VDB Entry
-
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064@%3Ccvs.httpd.apache.org%3E
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.htmlMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8@%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [6/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/-Apache Mail ArchivesMailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%40%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Patch
-
http://secunia.com/advisories/35284
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://www.debian.org/security/2009/dsa-1812
Debian -- Security Information -- DSA-1812-1 apr-utilMailing List;Third Party Advisory
-
https://www.exploit-db.com/exploits/8842
Apache mod_dav / svn - Remote Denial of Service - Multiple dos ExploitExploit;VDB Entry
-
http://www.vupen.com/english/advisories/2010/1107
Webmail | OVH- OVHBroken Link;Third Party Advisory
-
http://www-01.ibm.com/support/docview.wss?uid=swg27014463
Fix list for IBM WebSphere Application Server V7.0Broken Link;Third Party Advisory
-
http://www.vupen.com/english/advisories/2009/1907
Webmail: access your OVH emails on ovhcloud.com | OVHcloudBroken Link;Third Party Advisory
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http://svn.apache.org/viewvc?view=rev&revision=781403
[Apache-SVN] Revision 781403Patch
-
http://www.securityfocus.com/bid/35253
Broken Link;Third Party Advisory;VDB Entry
-
http://secunia.com/advisories/37221
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01201.html
[SECURITY] Fedora 11 Update: apr-util-1.3.7-1.fc11Mailing List
-
http://www.ubuntu.com/usn/usn-787-1
USN-787-1: Apache vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
http://secunia.com/advisories/35843
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://www.mandriva.com/security/advisories?name=MDVSA-2009:131
Page not found - Mandriva.comBroken Link;Third Party Advisory
-
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html
Oracle Critical Patch Update - April 2013Patch;Third Party Advisory
-
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ - Pony MailMailing List;Third Party Advisory
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https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a@%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Third Party Advisory
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http://www-01.ibm.com/support/docview.wss?uid=swg1PK88342
IBM notice: The page you requested cannot be displayedBroken Link
-
http://secunia.com/advisories/35487
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://support.apple.com/kb/HT3937
Page Not Found - Apple SupportBroken Link
-
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
mandriva.comBroken Link;Third Party Advisory
-
http://secunia.com/advisories/35444
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
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 sMailing List;Patch
-
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.html
[SECURITY] Fedora 10 Update: apr-util-1.3.7-1.fc10Mailing List
-
https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Patch
-
http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241
PK91241: Z/OS IBM HTTP SERVER FOR WEBSPHERE (POWERED BY APACHE) FIX PACK 6.1.0.27Broken Link;Third Party Advisory
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https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/-Apache Mail ArchivesMailing List;Patch
-
http://secunia.com/advisories/35360
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E
Pony Mail!Mailing List;Third Party Advisory
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http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
404 Not FoundBroken Link
-
http://wiki.rpath.com/Advisories:rPSA-2009-0123
Broken Link
-
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
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_Mailing List;Patch
-
http://security.gentoo.org/glsa/glsa-200907-03.xml
APR Utility Library: Multiple vulnerabilities (GLSA 200907-03) — Gentoo securityThird Party Advisory
-
http://secunia.com/advisories/35395
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/r2295080a257bad27ea68ca0af12fc715577f9e84801eae116a33107e@%3Ccvs.httpd.apache.org%3E
svn commit: r1073139 [6/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ - Pony MailMailing List;Third Party Advisory
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https://lists.apache.org/thread.html/reb7c64aeea604bf948467d9d1cab8ff23fa7d002be1964bcc275aae7@%3Ccvs.httpd.apache.org%3E
svn commit: r1888194 [6/13] - /httpd/site/trunk/content/security/json/ - Pony MailMailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2009/06/03/4
oss-security - CVE request: "billion laughs" attack against Apache APRMailing List
-
http://secunia.com/advisories/35710
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/reb7c64aeea604bf948467d9d1cab8ff23fa7d002be1964bcc275aae7%40%3Ccvs.httpd.apache.org%3E
svn commit: r1888194 [6/13] - /httpd/site/trunk/content/security/json/-Apache Mail ArchivesMailing List;Patch
-
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7@%3Ccvs.httpd.apache.org%3E
Pony Mail!Mailing List;Vendor Advisory
-
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10270
404 Not FoundBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Patch
-
https://lists.apache.org/thread.html/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24@%3Ccvs.httpd.apache.org%3E
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_2Mailing List;Third Party Advisory
-
http://secunia.com/advisories/35565
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://secunia.com/advisories/34724
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/rc4c53a0d57b2771ecd4b965010580db355e38137c8711311ee1073a8%40%3Ccvs.httpd.apache.org%3E
Apache Mail ArchivesMailing List;Patch
-
http://secunia.com/advisories/36473
About Secunia Research | FlexeraBroken Link;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
[security-announce] SUSE Security Summary Report: SUSE-SR:2010:011Mailing List;Third Party Advisory
-
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
Mailing List;Third Party Advisory
-
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12473
404 Not FoundBroken Link;Third Party Advisory
-
https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01173.html
[SECURITY] Fedora 9 Update: apr-util-1.2.12-7.fc9Mailing List
-
http://www.redhat.com/support/errata/RHSA-2009-1108.html
SupportBroken Link;Third Party Advisory
-
http://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.538210
The Slackware Linux Project: Slackware Security AdvisoriesBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f@%3Ccvs.httpd.apache.org%3E
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_Mailing List;Vendor Advisory
-
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/-Apache Mail ArchivesMailing List;Patch
-
http://www.redhat.com/support/errata/RHSA-2009-1107.html
SupportBroken Link;Third Party Advisory
-
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b@%3Ccvs.httpd.apache.org%3E
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_Mailing List;Vendor Advisory
-
http://www.ubuntu.com/usn/usn-786-1
USN-786-1: apr-util vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://lists.apache.org/thread.html/r2295080a257bad27ea68ca0af12fc715577f9e84801eae116a33107e%40%3Ccvs.httpd.apache.org%3E
svn commit: r1073139 [6/13] - in /websites/staging/httpd/trunk/content: ./ security/json/-Apache Mail ArchivesMailing List;Patch
-
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
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.htmlMailing List;Patch
-
http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478
PK99478: SHIP APAR FIXES FOR H28W700 FIX PACK 7.0.0.7.Broken Link;Third Party Advisory
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http://marc.info/?l=apr-dev&m=124396021826125&w=2
'[PATCH] prevent "billion laughs" attack against expat' - MARCMailing List;Patch
-
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
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_Mailing List;Patch
Products affected by CVE-2009-1955
- cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
- cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:http_server:-:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
- cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*