The MITRE CVE dictionary describes this issue as:
The recall_headers function in mod_mem_cache in Apache 2.2.4 does not properly copy all levels of header data, which can cause Apache to return HTTP headers containing previously used data, which could be used by remote attackers to obtain potentially sensitive information.
Find out more about CVE-2007-1862 from the
MITRE CVE dictionary dictionary and
Not vulnerable. This issue was specific to httpd version 2.2.4 and did not affect the versions of httpd as shipped with Red Hat Enterprise Linux 2.1, 3, 4 or 5.