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    CVE-2013-6438

    The dav_xml_get_cdata function in main/util.c in the mod_dav module in the Apache HTTP Server before 2.4.8 does not properly remove whitespace characters from CDATA sections, which allows remote attackers to cause a denial of service (daemon crash) via a crafted DAV WRITE request.

    Published:Oct 3, 2013
    Last Modified:Apr 12, 2025
    EPS:Mar 18, 2014
    EPSS Score:0.43037
    CVSS Score:5

    Affected Products

    Vendor
    Apache
    Product
    Http Server
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Oracle
    Product
    Http Server
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Jboss Enterprise Application Platform
    Vendor
    Redhat
    Product
    Jboss Enterprise Web Server

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-48913 (CVSS 7.3) — Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. …
    CVE-2026-42536 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted…
    CVE-2026-44185 (CVSS 7.3) — Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP…
    CVE-2026-34355 (CVSS 7.5) — A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted …
    CVE-2026-44631 (CVSS 9.8) — Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. Th…
    CVE-2026-44119 (CVSS 5.5) — Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess au…
    CVE-2026-43951 (CVSS 6.5) — Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response lan…
    CVE-2026-42535 (CVSS 9.1) — A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly ma…
    CVE-2026-34356 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassRev…
    CVE-2026-44186 (CVSS 7.3) — Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTT…

    References

    http://advisories.mageia.org/MGASA-2014-0135.html
    http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10698
    http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
    http://marc.info/?l=bugtraq&m=141017844705317&w=2
    http://marc.info/?l=bugtraq&m=141390017113542&w=2
    http://seclists.org/fulldisclosure/2014/Dec/23
    http://secunia.com/advisories/58230
    http://secunia.com/advisories/59315
    http://secunia.com/advisories/59345
    http://secunia.com/advisories/60536
    http://security.gentoo.org/glsa/glsa-201408-12.xml
    http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGES
    http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/util.c
    http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/util.c?r1=1528718&r2=1556428&diff_format=h
    http://www-01.ibm.com/support/docview.wss?uid=swg21669554
    http://www-01.ibm.com/support/docview.wss?uid=swg21676091
    http://www-01.ibm.com/support/docview.wss?uid=swg21676092
    http://www.apache.org/dist/httpd/CHANGES_2.4.9
    http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
    http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
    http://www.securityfocus.com/archive/1/534161/100/0/threaded
    http://www.securityfocus.com/bid/66303
    http://www.ubuntu.com/usn/USN-2152-1
    http://www.vmware.com/security/advisories/VMSA-2014-0012.html
    https://blogs.oracle.com/sunsecurity/entry/multiple_input_validation_vulnerabilities_in1
    https://httpd.apache.org/security/vulnerabilities_24.html
    https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9821b0a32a1d0a1b4947abb6f3630053fcbb2ec905d9a32c2bd4d4ee%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
    https://puppet.com/security/cve/cve-2013-6438
    https://support.apple.com/HT204659
    https://support.apple.com/kb/HT6535
    http://advisories.mageia.org/MGASA-2014-0135.html
    http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html
    http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10698
    http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html
    http://marc.info/?l=bugtraq&m=141017844705317&w=2
    http://marc.info/?l=bugtraq&m=141390017113542&w=2
    http://seclists.org/fulldisclosure/2014/Dec/23
    http://secunia.com/advisories/58230
    http://secunia.com/advisories/59315
    http://secunia.com/advisories/59345
    http://secunia.com/advisories/60536
    http://security.gentoo.org/glsa/glsa-201408-12.xml
    http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGES
    http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/util.c
    http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/dav/main/util.c?r1=1528718&r2=1556428&diff_format=h
    http://www-01.ibm.com/support/docview.wss?uid=swg21669554
    http://www-01.ibm.com/support/docview.wss?uid=swg21676091
    http://www-01.ibm.com/support/docview.wss?uid=swg21676092
    http://www.apache.org/dist/httpd/CHANGES_2.4.9
    http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
    http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
    http://www.securityfocus.com/archive/1/534161/100/0/threaded
    http://www.securityfocus.com/bid/66303
    http://www.ubuntu.com/usn/USN-2152-1
    http://www.vmware.com/security/advisories/VMSA-2014-0012.html
    https://blogs.oracle.com/sunsecurity/entry/multiple_input_validation_vulnerabilities_in1
    https://httpd.apache.org/security/vulnerabilities_24.html
    https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9821b0a32a1d0a1b4947abb6f3630053fcbb2ec905d9a32c2bd4d4ee%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
    https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
    https://puppet.com/security/cve/cve-2013-6438
    https://support.apple.com/HT204659
    https://support.apple.com/kb/HT6535

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High