httpd: NULL pointer dereference in mod_cache if Content-Type has empty value
Published Oct 10, 2014
5.0
MEDIUMCVSS 2.0
EPSS 13.56%
Description
The cache_merge_headers_out function in modules/cache/cache_util.c in the mod_cache module in the Apache HTTP Server before 2.4.11 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty HTTP Content-Type header.
Affected products
No data.
Configuration 1
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.6
- 2.4.7
- 2.4.9
- 2.4.10
Configuration 2
- 10.04
- 12.04
- 14.04
- 14.10
Configuration 3
- 7.0
- 7.3
- 7.4
- 7.5
- 7.6
- 7.7
- 7.0
- 7.3
- 7.4
- 7.6
- 7.7
- 7.3
- 7.6
- 7.7
Configuration 4
- < 12.1.4
- 12.2.0
- 12.2.1
- 12.3.0
- 6
No data.
Red Hat Enterprise Linux 7
httpd-0:2.4.6-31.el7
Fixed · RHSA-2015:0325
Red Hat JBoss Web Server 3 for RHEL 6
apache-commons-collections-eap6-0:3.2.1-18.redhat_7.1.ep6.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
httpd24-0:2.4.6-59.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
mod_bmx-0:0.9.5-7.GA.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
mod_cluster-native-0:1.3.1-6.Final_redhat_2.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
tomcat-vault-0:1.0.8-4.Final_redhat_4.1.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
tomcat7-0:7.0.59-42_patch_01.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 6
tomcat8-0:8.0.18-52_patch_01.ep7.el6
Fixed · RHSA-2015:2659
Red Hat JBoss Web Server 3 for RHEL 7
apache-commons-collections-eap6-0:3.2.1-18.redhat_7.1.ep6.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
httpd24-0:2.4.6-59.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
mod_bmx-0:0.9.5-7.GA.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
mod_cluster-native-0:1.3.1-6.Final_redhat_2.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
tomcat-vault-0:1.0.8-4.Final_redhat_4.1.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
tomcat7-0:7.0.59-42_patch_01.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3 for RHEL 7
tomcat8-0:8.0.18-52_patch_01.ep7.el7
Fixed · RHSA-2015:2660
Red Hat JBoss Web Server 3.0
n/a
Fixed · RHSA-2015:2661
Red Hat Software Collections 1 for Red Hat Enterprise Linux 6
httpd24-httpd-0:2.4.6-22.el6
Fixed · RHSA-2014:1972
Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.4 EUS
httpd24-httpd-0:2.4.6-22.el6
Fixed · RHSA-2014:1972
Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.5 EUS
httpd24-httpd-0:2.4.6-22.el6
Fixed · RHSA-2014:1972
Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.6 EUS
httpd24-httpd-0:2.4.6-22.el6
Fixed · RHSA-2014:1972
Red Hat Software Collections 1 for Red Hat Enterprise Linux 7
httpd24-httpd-0:2.4.6-25.el7
Fixed · RHSA-2014:1972
CloudForms Management Engine 5
httpd
Not affected
Red Hat Directory Server 8
httpd
Not affected
Red Hat Enterprise Linux 4
httpd
Not affected
Red Hat Enterprise Linux 5
httpd
Not affected
Red Hat Enterprise Linux 6
httpd
Not affected
Red Hat JBoss Enterprise Application Platform 6
httpd
Not affected
Red Hat JBoss Enterprise Web Server 1
httpd
Not affected
Red Hat JBoss Enterprise Web Server 2
httpd
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | httpd-0:2.4.6-31.el7 | Fixed | RHSA-2015:0325 |
| Red Hat JBoss Web Server 3 for RHEL 6 | apache-commons-collections-eap6-0:3.2.1-18.redhat_7.1.ep6.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | httpd24-0:2.4.6-59.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | mod_bmx-0:0.9.5-7.GA.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | mod_cluster-native-0:1.3.1-6.Final_redhat_2.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat-vault-0:1.0.8-4.Final_redhat_4.1.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat7-0:7.0.59-42_patch_01.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 6 | tomcat8-0:8.0.18-52_patch_01.ep7.el6 | Fixed | RHSA-2015:2659 |
| Red Hat JBoss Web Server 3 for RHEL 7 | apache-commons-collections-eap6-0:3.2.1-18.redhat_7.1.ep6.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | httpd24-0:2.4.6-59.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | mod_bmx-0:0.9.5-7.GA.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | mod_cluster-native-0:1.3.1-6.Final_redhat_2.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat-vault-0:1.0.8-4.Final_redhat_4.1.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat7-0:7.0.59-42_patch_01.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3 for RHEL 7 | tomcat8-0:8.0.18-52_patch_01.ep7.el7 | Fixed | RHSA-2015:2660 |
| Red Hat JBoss Web Server 3.0 | n/a | Fixed | RHSA-2015:2661 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 6 | httpd24-httpd-0:2.4.6-22.el6 | Fixed | RHSA-2014:1972 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.4 EUS | httpd24-httpd-0:2.4.6-22.el6 | Fixed | RHSA-2014:1972 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.5 EUS | httpd24-httpd-0:2.4.6-22.el6 | Fixed | RHSA-2014:1972 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 6.6 EUS | httpd24-httpd-0:2.4.6-22.el6 | Fixed | RHSA-2014:1972 |
| Red Hat Software Collections 1 for Red Hat Enterprise Linux 7 | httpd24-httpd-0:2.4.6-25.el7 | Fixed | RHSA-2014:1972 |
| CloudForms Management Engine 5 | httpd | Not affected | n/a |
| Red Hat Directory Server 8 | httpd | Not affected | n/a |
| Red Hat Enterprise Linux 4 | httpd | Not affected | n/a |
| Red Hat Enterprise Linux 5 | httpd | Not affected | n/a |
| Red Hat Enterprise Linux 6 | httpd | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | httpd | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 1 | httpd | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | httpd | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of httpd as shipped with Red Hat Enterprise Linux 5 and 6, JBoss Enterprise Web Server 1 and 2, and JBoss Application Platform 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 13.56% (0.13558) | 96.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.21% (0.13205) | 95.87th | v5 (v2026.06.15) |
| Jan 29, 2026 | 4.88% (0.04881) | 89.29th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.87% (0.03873) | 87.16th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.95% (0.05950) | 83.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.87% (0.03873) | 87.46th | v4 (v2025.03.14) |
| Dec 17, 2024 | 13.65% (0.13654) | 95.60th | v3 (v2023.03.01) |
| Oct 8, 2024 | 7.60% (0.07604) | 94.28th | v3 (v2023.03.01) |
| Apr 5, 2024 | 6.27% (0.06267) | 93.47th | v3 (v2023.03.01) |
| Nov 8, 2023 | 6.56% (0.06563) | 93.00th | v3 (v2023.03.01) |
| Jul 31, 2023 | 2.15% (0.02152) | 87.83th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.53% (0.02530) | 88.49th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.34% (0.07344) | 92.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.34% (0.07344) | 91.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.34% (0.07344) | 80.64th | v2 (v2022.01.01) |
References (32)
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor-advisoryx_refsource_APPLEBroken LinkMailing List
- http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html vendor-advisoryx_refsource_APPLEBroken LinkMailing List
- http://rhn.redhat.com/errata/RHSA-2015-0325.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup&pathrev=1627749 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://svn.apache.org/viewvc?view=revision&revision=1624234 x_refsource_CONFIRMPatchVendor Advisory
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/71656 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1031005 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2523-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-3581 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1149709 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/97027 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r83109088737656fa6307bd99ab40f8ff0269ae58d3f7272d7048494a%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/ra7f6aeb28661fbf826969526585f16856abc4615877875f9d3b35ef4%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2014-3581
- https://security.gentoo.org/glsa/201610-02 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://support.apple.com/HT205219 x_refsource_CONFIRMThird Party Advisory
- https://support.apple.com/kb/HT205031 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2014-3581
Change history (0)
No recorded changes yet.