cbcvebase.
CVE-2013-5704
published 2014-04-15

CVE-2013-5704: The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer…

PriorityP348medium5CVSS 2.0
AVNACLAuNCNIPAN
EPSS
60.20%
99.0th percentile
The mod_headers module in the Apache HTTP Server 2.2.22 allows remote attackers to bypass "RequestHeader unset" directives by placing a header in the trailer portion of data sent with chunked transfer coding. NOTE: the vendor states "this is not a security issue in httpd as such."

Affected

74 ranges· showing 25
VendorProductVersion rangeFixed in
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server
apachehttp_server

Detection & IOCsextracted from sources · hover to see the quote

  • Attackers exploit CVE-2013-5704 by placing malicious headers in the trailer portion of chunked transfer-encoded requests to bypass RequestHeader unset directives in mod_headers.
  • The attack vector is placing a header in the trailer portion of data sent with chunked transfer coding to bypass 'RequestHeader unset' directives.
  • The vulnerability allows HTTP trailers to replace HTTP headers during request processing, enabling bypass of RequestHeaders directives.
  • ·The affected component is the mod_headers module in Apache HTTP Server; the flaw is triggered only when chunked transfer encoding is used and RequestHeader unset directives are configured.
  • ·Red Hat Certificate System is not affected even when mod_headers is installed, because it does not use the mod_headers module.
  • ·The fix was introduced in Apache 2.4.10-2 (Debian packaging); versions prior to this remain vulnerable.

CVSS provenance

nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv5.0MEDIUM
vendor_debian5.0MEDIUM
vendor_redhat5.0MEDIUM
vendor_ubuntu5.0MEDIUM
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