'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.'
This issue affects ClearOS 6.
This issue was fixed in the backported fixes of versions of:
- httpd version 2.2.15-30 or later in ClearOS 6
- webconfig-httpd version 2.2.15-30 or later in ClearOS 6
Some scans may claim that ClearOS 7 is vulnerable to this exploit. No version of ClearOS 7 has this vulnerability.
This issue was fixed during the maintenance cycle of ClearOS 6. No version of ClearOS 7 has been vulnerable to this vulnerability. ClearOS systems that are up to date do not suffer from this vulnerability. Some vulnerability scanning software may report this bug because their only method for determining the issue is to check the http version number since the exploit requires specific web configurations and has not other means for testing vulnerability. In ClearOS, version numbers stay consistent through the product's life-cycle and will produce a false positive on this issue if the testing software considers only the http version and not the ClearOS patch level.
If you are running ClearOS 6, please ensure that you are running the latest updates:
You may also validate your version by running:
rpm -qi httpd
You should validate that you are running:
- httpd version 2.2.15-30 or later
- webconfig-httpd version 2.2.15-30 or later