CVE-2013-6438

CVE-2013-6438 is a medium-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2013-6438?
CVE-2013-6438 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-6438 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6438?
CVE-2013-6438 primarily affects Apache Http Server. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6438?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6438 published?
CVE-2013-6438 was published on 2014-03-18 and last updated on 2026-06-17.

References

Affected products (9)

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Threat intelligence

Threat-intel indicators referencing this CVE: