CVE-2009-3560

expat: buffer over-read and crash in big2_toUtf8() on XML with malformed UTF-8 sequences

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.

La función big2_toUt8 en lib/xmltok.c en libexpat de Expat v2.0.1, como el usado en el módulo XML-Twig para Perl, permite a los atacantes dependientes del contexto provocar una denegación de servicio (caída de aplicación) mediante un documento XML con secuencias UTF-8 malformadas que disparan un desbordamiento de lectura de búfer, relacionado con la función doProlog en lib/xmlparse.c, siendo una vulnerabilidad diferente a CVE-2009-2625 y CVE-2009-3720.

*Credits: N/A

CVSS Scores

NISTv2 5.0

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-10-05 CVE Reserved
2009-12-04 CVE Published
2024-08-07 CVE Updated
2024-08-07 First Exploit
2024-11-10 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (58)

URL	Tag	Source
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?view=log#rev1.165	Broken Link
http://lists.vmware.com/pipermail/security-announce/2010/000082.html	Broken Link
http://secunia.com/advisories/37537	Broken Link
http://secunia.com/advisories/38231	Broken Link
http://secunia.com/advisories/38794	Broken Link
http://secunia.com/advisories/38832	Broken Link
http://secunia.com/advisories/38834	Broken Link
http://secunia.com/advisories/39478	Broken Link
http://secunia.com/advisories/41701	Broken Link
http://secunia.com/advisories/43300	Broken Link
http://www.securityfocus.com/bid/37203	Third Party Advisory
http://www.securitytracker.com/id?1023278	Third Party Advisory
http://www.vupen.com/english/advisories/2010/0528	Broken Link
http://www.vupen.com/english/advisories/2010/0896	Broken Link
http://www.vupen.com/english/advisories/2010/1107	Broken Link
http://www.vupen.com/english/advisories/2011/0359	Broken Link
https://lists.apache.org/thread.html/54a42d4b01968df1117cea77fc53d6beb931c0e05936ad02af93e9ac%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/5df9bfb86a3b054bb985a45ff9250b0332c9ecc181eec232489e7f79%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r0276683d8e1e07153fc8642618830ac0ade85b9ae0dc7b07f63bb8fc%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r2295080a257bad27ea68ca0af12fc715577f9e84801eae116a33107e%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r2cb985de917e7da0848c440535f65a247754db8b2154a10089e4247b%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r5f9c22f9c28adbd9f00556059edc7b03a5d5bb71d4bb80257c0d34e4%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r8828e649175df56f1f9e3919938ac7826128525426e2748f0ab62feb%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r9e8622254184645bc963a1d47c5d47f6d5a36d6f080d8d2c43b2b142%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rad2acee3ab838b52c04a0698b1728a9a43467bf365bd481c993c535d%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rb9c9f42dafa25d2f669dac2a536a03f2575bc5ec1be6f480618aee10%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/reb7c64aeea604bf948467d9d1cab8ff23fa7d002be1964bcc275aae7%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E	Mailing List
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10613	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12942	Broken Link
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6883	Broken Link

URL	Date	SRC
http://mail.python.org/pipermail/expat-bugs/2009-November/002846.html	2024-08-07

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=533174	2017-11-16

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html	2023-11-07
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html	2023-11-07
http://marc.info/?l=bugtraq&m=130168502603566&w=2	2023-11-07
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026	2023-11-07
http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1	2023-11-07
http://www.debian.org/security/2009/dsa-1953	2023-11-07
http://www.mandriva.com/security/advisories?name=MDVSA-2009:316	2023-11-07
http://www.redhat.com/support/errata/RHSA-2011-0896.html	2023-11-07
http://www.ubuntu.com/usn/USN-890-1	2023-11-07
http://www.ubuntu.com/usn/USN-890-6	2023-11-07
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html	2023-11-07
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00394.html	2023-11-07
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html	2023-11-07
https://access.redhat.com/security/cve/CVE-2009-3560	2017-11-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libexpat Project Search vendor "Libexpat Project"	Libexpat Search vendor "Libexpat Project" for product "Libexpat"	2.0.1 Search vendor "Libexpat Project" for product "Libexpat" and version "2.0.1"	-	Affected	in	Xmltwig Search vendor "Xmltwig"	Xml-twig For Perl Search vendor "Xmltwig" for product "Xml-twig For Perl"	*	-	Safe
Apache Search vendor "Apache"		Http Server Search vendor "Apache" for product "Http Server"				>= 2.0.35 < 2.0.64 Search vendor "Apache" for product "Http Server" and version " >= 2.0.35 < 2.0.64"		-		Affected
Apache Search vendor "Apache"		Http Server Search vendor "Apache" for product "Http Server"				>= 2.2.0 < 2.2.17 Search vendor "Apache" for product "Http Server" and version " >= 2.2.0 < 2.2.17"		-		Affected