CVE-2013-5704

Name: CVE-2013-5704
Creator: NVD / NIST
Published: 2014-04-15T10:55:11.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 60.20%

Last modified Jun 16, 2026

CVE-2013-5704 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 60.20% chance of exploitation in the next 30 days.

Description

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."

Metrics

EPSS Probability

60.20%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apache	Http Server	2.2.0
Apache	Http Server	2.2.2
Apache	Http Server	2.2.3
Apache	Http Server	2.2.4
Apache	Http Server	2.2.5
Apache	Http Server	2.2.6
Apache	Http Server	2.2.8
Apache	Http Server	2.2.9
Apache	Http Server	2.2.10
Apache	Http Server	2.2.11
Apache	Http Server	2.2.12
Apache	Http Server	2.2.13
Apache	Http Server	2.2.14
Apache	Http Server	2.2.15
Apache	Http Server	2.2.16
Apache	Http Server	2.2.17
Apache	Http Server	2.2.18
Apache	Http Server	2.2.19
Apache	Http Server	2.2.20
Apache	Http Server	2.2.21
Apache	Http Server	2.2.22
Apache	Http Server	2.2.23
Apache	Http Server	2.2.24
Apache	Http Server	2.2.25
Apache	Http Server	2.2.26
Apache	Http Server	2.2.27
Apache	Http Server	2.4.1
Apache	Http Server	2.4.2
Apache	Http Server	2.4.3
Apache	Http Server	2.4.4
Apache	Http Server	2.4.6
Apache	Http Server	2.4.7
Apache	Http Server	2.4.9
Apache	Http Server	2.4.10
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Eus	7.3
Redhat	Enterprise Linux Eus	7.4
Redhat	Enterprise Linux Eus	7.5
Redhat	Enterprise Linux Eus	7.6
Redhat	Enterprise Linux Eus	7.7
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	7.3
Redhat	Enterprise Linux Server Aus	7.4
Redhat	Enterprise Linux Server Aus	7.6
Redhat	Enterprise Linux Server Aus	7.7
Redhat	Enterprise Linux Server Tus	7.3
Redhat	Enterprise Linux Server Tus	7.6
Redhat	Enterprise Linux Server Tus	7.7

Showing 50 of 71 affected configurations. See NVD for the full list.

References

http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.htmlMailing List, Third Party Advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.htmlMailing List, Third Party Advisory
http://marc.info/?l=apache-httpd-dev&m=139636309822854&w=2Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=143403519711434&w=2Issue Tracking, Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144493176821532&w=2Issue Tracking, Mailing List, Third Party Advisory
http://martin.swende.se/blog/HTTPChunked.htmlBroken Link, Exploit, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-0325.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1249.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2661.htmlBroken Link, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0061.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0062.htmlThird Party Advisory
http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGESRelease Notes, Vendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.cPatch, Vendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?r1=1610674&r2=1610814&diff_format=hPatch, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:174Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securityfocus.com/bid/66550Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2523-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2015:2659Third Party Advisory
https://access.redhat.com/errata/RHSA-2015:2660Third Party Advisory
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04832246Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9821b0a32a1d0a1b4947abb6f3630053fcbb2ec905d9a32c2bd4d4ee%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
https://security.gentoo.org/glsa/201504-03Third Party Advisory
https://support.apple.com/HT204659Third Party Advisory
https://support.apple.com/HT205219Third Party Advisory
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.htmlMailing List, Third Party Advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.htmlMailing List, Third Party Advisory
http://marc.info/?l=apache-httpd-dev&m=139636309822854&w=2Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=143403519711434&w=2Issue Tracking, Mailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=144493176821532&w=2Issue Tracking, Mailing List, Third Party Advisory
http://martin.swende.se/blog/HTTPChunked.htmlBroken Link, Exploit, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-0325.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1249.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-2661.htmlBroken Link, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0061.htmlThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0062.htmlThird Party Advisory
http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/CHANGESRelease Notes, Vendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.cPatch, Vendor Advisory
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/proxy/mod_proxy_http.c?r1=1610674&r2=1610814&diff_format=hPatch, Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:174Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securityfocus.com/bid/66550Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2523-1Third Party Advisory
https://access.redhat.com/errata/RHSA-2015:2659Third Party Advisory
https://access.redhat.com/errata/RHSA-2015:2660Third Party Advisory
https://h20564.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04832246Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9821b0a32a1d0a1b4947abb6f3630053fcbb2ec905d9a32c2bd4d4ee%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E
https://security.gentoo.org/glsa/201504-03Third Party Advisory
https://support.apple.com/HT204659Third Party Advisory
https://support.apple.com/HT205219Third Party Advisory

Timeline

Published: Apr 15, 2014
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5704?

How severe is CVE-2013-5704?

Severity scoring for CVE-2013-5704 is pending analysis. The EPSS model estimates a 60.20% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5704?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-5704?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST