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Fencer Intel
medium 5.0

CVE-2013-6438 json

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 whitesp…

published 12y ago modified 4mo ago also EUVD-2013-6247

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.5%
EPSS 27.5% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

  • apache http_server 2.2.27, 2.4.9
  • apache2 Debian 14, Debian 13, Debian 12 2.4.9-1

debian advisories DEBIAN-CVE-2013-6438

  • httpd jboss enterprise web server 2, jboss enterprise application platform 6 2.2.22-27.ep6.el5
  • httpd jboss enterprise web server 2, jboss enterprise application platform 6 2.2.22-27.ep6.el6
  • mod_ssl jboss enterprise web server 2, jboss enterprise application platform 6 1:2.2.22-27.ep6.el5
  • mod_ssl jboss enterprise web server 2, jboss enterprise application platform 6 1:2.2.22-27.ep6.el6
  • httpd-tools jboss enterprise web server 2, jboss enterprise application platform 6 2.2.22-27.ep6.el5
  • httpd-tools jboss enterprise web server 2, jboss enterprise application platform 6 2.2.22-27.ep6.el6
  • httpd-manual jboss enterprise web server 2 2.2.22-27.ep6.el5
  • httpd-manual jboss enterprise web server 2 2.2.22-27.ep6.el6

red hat advisories RHSA-2014:0783RHSA-2014:0826RHSA-2014:0370RHSA-2014:0369

  • apache2 openSUSE Tumbleweed 2.4.23-4.1

opensuse advisories openSUSE-SU-2024:10268-1

Is CVE-2013-6438 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-6438 updated cvss 4.3

httpd: mod_dav denial of service via crafted DAV WRITE request

  • Red Hat Directory Server 8 httpd
    affected: no fix available
  • Red Hat JBoss Enterprise Application Platform 5 httpd Red Hat JBoss Enterprise Web Server 1 httpd
    affected: no fix planned “Will not fix”
  • Red Hat Software Collections httpd24-httpd, httpd24-mod_md, httpd24-mod_ssl, httpd24-mod_ldap, httpd24-httpd-tools, httpd24-mod_session, +2 more
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5 server) httpd 2.2.3-85.el5_10, mod_ssl 2.2.3-85.el5_10, httpd-manual 2.2.3-85.el5_10 Red Hat Enterprise Linux Desktop (v. 5 client) httpd 2.2.3-85.el5_10, mod_ssl 2.2.3-85.el5_10
    fixed: vendor fix RHSA-2014:0369
  • Red Hat Enterprise Linux Desktop (v. 6) httpd 2.2.15-30.el6_5, httpd-tools 2.2.15-30.el6_5 Red Hat Enterprise Linux Desktop Optional (v. 6) httpd 2.2.15-30.el6_5, mod_ssl 2.2.15-30.el6_5, httpd-manual 2.2.15-30.el6_5
    fixed: vendor fix RHSA-2014:0370
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) httpd 2.2.3-85.el5_10, httpd-manual 2.2.3-85.el5_10
    fixed: vendor fix RHSA-2014:0369
  • Red Hat Enterprise Linux HPC Node (v. 6) httpd 2.2.15-30.el6_5, httpd-tools 2.2.15-30.el6_5 Red Hat Enterprise Linux HPC Node Optional (v. 6) httpd 2.2.15-30.el6_5, mod_ssl 2.2.15-30.el6_5, httpd-manual 2.2.15-30.el6_5 Red Hat Enterprise Linux Server (v. 6) httpd 2.2.15-30.el6_5, mod_ssl 2.2.15-30.el6_5, httpd-tools 2.2.15-30.el6_5, httpd-manual 2.2.15-30.el6_5 Red Hat Enterprise Linux Workstation (v. 6) httpd 2.2.15-30.el6_5, mod_ssl 2.2.15-30.el6_5, httpd-tools 2.2.15-30.el6_5, httpd-manual 2.2.15-30.el6_5
    fixed: vendor fix RHSA-2014:0370
  • Red Hat JBoss Enterprise Application Platform 6.2
    fixed: vendor fix RHSA-2014:0825
show 4 more
  • Red Hat JBoss Enterprise Application Platform 6.2 for RHEL 5 Server httpd 2.2.22-27.ep6.el5, mod_ssl 2.2.22-27.ep6.el5, httpd-tools 2.2.22-27.ep6.el5 Red Hat JBoss Enterprise Application Platform 6.2 for RHEL 6 Server httpd 2.2.22-27.ep6.el6, mod_ssl 2.2.22-27.ep6.el6, httpd-tools 2.2.22-27.ep6.el6
    fixed: vendor fix RHSA-2014:0826
  • Red Hat JBoss Enterprise Web Server 2 for RHEL 5 Server httpd 2.2.22-27.ep6.el5, mod_ssl 2.2.22-27.ep6.el5, httpd-tools 2.2.22-27.ep6.el5, httpd-manual 2.2.22-27.ep6.el5 Red Hat JBoss Enterprise Web Server 2 for RHEL 6 Server httpd 2.2.22-27.ep6.el6, mod_ssl 2.2.22-27.ep6.el6, httpd-tools 2.2.22-27.ep6.el6, httpd-manual 2.2.22-27.ep6.el6
    fixed: vendor fix RHSA-2014:0783
  • Red Hat JBoss Web Server 2.0
    fixed: vendor fix RHSA-2014:0784
  • Red Hat Enterprise Linux 7 httpd, mod_ssl, mod_ldap, httpd-tools, mod_session, httpd-manual, +1 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

27.50% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.