CRITICAL
httpd: mod_ssl NULL pointer dereference
Published Jun 20, 2017
9.8
CRITICALCVSS 3.0
EPSS 19.95%
Description
In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call ap_hook_process_connection() during an HTTP request to an HTTPS port.
Affected products
-
- Version 2.2.0 to 2.2.32StatusaffectedConstraints-
- Version 2.4.0 to 2.4.25StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | n/a |
|
OR
- 2.2.0
- 2.2.2
- 2.2.3
- 2.2.11
- 2.2.12
- 2.2.13
- 2.2.14
- 2.2.15
- 2.2.16
- 2.2.17
- 2.2.18
- 2.2.19
- 2.2.20
- 2.2.21
- 2.2.22
- 2.2.23
- 2.2.24
- 2.2.25
- 2.2.26
- 2.2.27
- 2.2.29
- 2.2.30
- 2.2.31
- 2.2.32
- 2.4.1
- 2.4.2
- 2.4.10
- 2.4.12
- 2.4.16
- 2.4.17
- 2.4.18
- 2.4.20
- 2.4.23
- 2.4.25
No data.
JBoss Core Services on RHEL 6
jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el6
Fixed · RHSA-2017:3477
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el6
Fixed · RHSA-2017:3477
JBoss Core Services on RHEL 6
jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el6
Fixed · RHSA-2017:3477
JBoss Core Services on RHEL 7
jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el7
Fixed · RHSA-2017:3476
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el7
Fixed · RHSA-2017:3476
JBoss Core Services on RHEL 7
jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el7
Fixed · RHSA-2017:3476
Red Hat Enterprise Linux 6
httpd-0:2.2.15-60.el6_9.5
Fixed · RHSA-2017:2478
Red Hat Enterprise Linux 6.7 Extended Update Support
httpd-0:2.2.15-47.el6_7.5
Fixed · RHSA-2017:3195
Red Hat Enterprise Linux 7
httpd-0:2.4.6-67.el7_4.2
Fixed · RHSA-2017:2479
Red Hat Enterprise Linux 7.2 Extended Update Support
httpd-0:2.4.6-40.el7_2.6
Fixed · RHSA-2017:3193
Red Hat Enterprise Linux 7.3 Extended Update Support
httpd-0:2.4.6-45.el7_3.5
Fixed · RHSA-2017:3194
Red Hat JBoss Core Services
httpd
Fixed · RHSA-2017:3475
Red Hat Software Collections for Red Hat Enterprise Linux 6
httpd24-httpd-0:2.4.25-9.el6.1
Fixed · RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS
httpd24-httpd-0:2.4.25-9.el6.1
Fixed · RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux 7
httpd24-httpd-0:2.4.25-9.el7.1
Fixed · RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS
httpd24-httpd-0:2.4.25-9.el7.1
Fixed · RHSA-2017:2483
Red Hat Enterprise Linux 5
httpd
Will not fix
Red Hat JBoss Enterprise Application Platform 5
jbossas
Not affected
Red Hat JBoss Enterprise Application Platform 6
jbossas
Will not fix
Red Hat JBoss Enterprise Web Server 1
httpd
Will not fix
Red Hat JBoss Enterprise Web Server 2
httpd
Will not fix
Red Hat JBoss Enterprise Web Server 3
httpd
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el6 | Fixed | RHSA-2017:3477 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el6 | Fixed | RHSA-2017:3477 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el6 | Fixed | RHSA-2017:3477 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-httpd-0:2.4.23-125.jbcs.el7 | Fixed | RHSA-2017:3476 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_bmx-0:0.9.6-15.GA.jbcs.el7 | Fixed | RHSA-2017:3476 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-mod_cluster-native-0:1.3.8-1.Final_redhat_1.jbcs.el7 | Fixed | RHSA-2017:3476 |
| Red Hat Enterprise Linux 6 | httpd-0:2.2.15-60.el6_9.5 | Fixed | RHSA-2017:2478 |
| Red Hat Enterprise Linux 6.7 Extended Update Support | httpd-0:2.2.15-47.el6_7.5 | Fixed | RHSA-2017:3195 |
| Red Hat Enterprise Linux 7 | httpd-0:2.4.6-67.el7_4.2 | Fixed | RHSA-2017:2479 |
| Red Hat Enterprise Linux 7.2 Extended Update Support | httpd-0:2.4.6-40.el7_2.6 | Fixed | RHSA-2017:3193 |
| Red Hat Enterprise Linux 7.3 Extended Update Support | httpd-0:2.4.6-45.el7_3.5 | Fixed | RHSA-2017:3194 |
| Red Hat JBoss Core Services | httpd | Fixed | RHSA-2017:3475 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 | httpd24-httpd-0:2.4.25-9.el6.1 | Fixed | RHSA-2017:2483 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUS | httpd24-httpd-0:2.4.25-9.el6.1 | Fixed | RHSA-2017:2483 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | httpd24-httpd-0:2.4.25-9.el7.1 | Fixed | RHSA-2017:2483 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUS | httpd24-httpd-0:2.4.25-9.el7.1 | Fixed | RHSA-2017:2483 |
| Red Hat Enterprise Linux 5 | httpd | Will not fix | n/a |
| Red Hat JBoss Enterprise Application Platform 5 | jbossas | Not affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | jbossas | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 1 | httpd | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 2 | httpd | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | httpd | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
3.7 LOW Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact Low
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
19.95% 0.19953
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.19953
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (64 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 19.95% (0.19953) | 97.36th | v5 (v2026.06.15) |
| Sep 22, 2026 | 19.95% (0.19953) | 97.31th | v5 (v2026.06.15) |
| Sep 21, 2026 | 18.52% (0.18521) | 97.19th | v5 (v2026.06.15) |
| Sep 6, 2026 | 19.95% (0.19953) | 97.26th | v5 (v2026.06.15) |
| Sep 5, 2026 | 18.52% (0.18521) | 97.13th | v5 (v2026.06.15) |
| Aug 30, 2026 | 19.95% (0.19953) | 97.24th | v5 (v2026.06.15) |
| Aug 28, 2026 | 18.52% (0.18521) | 97.11th | v5 (v2026.06.15) |
| Aug 24, 2026 | 19.95% (0.19953) | 97.23th | v5 (v2026.06.15) |
| Aug 23, 2026 | 18.52% (0.18521) | 97.10th | v5 (v2026.06.15) |
| Jun 15, 2026 | 19.95% (0.19953) | 97.09th | v5 (v2026.06.15) |
| Apr 27, 2026 | 30.77% (0.30773) | 96.74th | v4 (v2025.03.14) |
| Apr 15, 2026 | 32.70% (0.32699) | 96.88th | v4 (v2025.03.14) |
| Mar 8, 2026 | 34.52% (0.34517) | 96.92th | v4 (v2025.03.14) |
| Mar 4, 2026 | 32.55% (0.32547) | 96.77th | v4 (v2025.03.14) |
| Mar 1, 2026 | 26.97% (0.26973) | 96.29th | v4 (v2025.03.14) |
| Feb 4, 2026 | 33.10% (0.33099) | 96.77th | v4 (v2025.03.14) |
| Feb 1, 2026 | 27.48% (0.27478) | 96.31th | v4 (v2025.03.14) |
| Jan 4, 2026 | 33.10% (0.33099) | 96.74th | v4 (v2025.03.14) |
| Jan 1, 2026 | 27.48% (0.27478) | 96.29th | v4 (v2025.03.14) |
| Dec 28, 2025 | 33.10% (0.33099) | 96.74th | v4 (v2025.03.14) |
| Dec 27, 2025 | 34.42% (0.34423) | 96.86th | v4 (v2025.03.14) |
| Dec 18, 2025 | 33.10% (0.33099) | 96.73th | v4 (v2025.03.14) |
| Dec 14, 2025 | 36.34% (0.36339) | 96.94th | v4 (v2025.03.14) |
| Dec 4, 2025 | 38.38% (0.38380) | 97.06th | v4 (v2025.03.14) |
| Dec 1, 2025 | 32.39% (0.32391) | 96.69th | v4 (v2025.03.14) |
| Nov 4, 2025 | 38.38% (0.38380) | 97.05th | v4 (v2025.03.14) |
| Nov 2, 2025 | 32.39% (0.32391) | 96.66th | v4 (v2025.03.14) |
| Nov 1, 2025 | 30.47% (0.30474) | 96.51th | v4 (v2025.03.14) |
| Oct 28, 2025 | 36.34% (0.36339) | 96.91th | v4 (v2025.03.14) |
| Oct 27, 2025 | 37.70% (0.37704) | 97.03th | v4 (v2025.03.14) |
| Oct 4, 2025 | 36.34% (0.36339) | 96.98th | v4 (v2025.03.14) |
| Oct 1, 2025 | 30.47% (0.30474) | 96.57th | v4 (v2025.03.14) |
| Sep 4, 2025 | 37.70% (0.37704) | 97.10th | v4 (v2025.03.14) |
| Sep 1, 2025 | 21.08% (0.21081) | 95.47th | v4 (v2025.03.14) |
| Aug 18, 2025 | 38.28% (0.38283) | 97.12th | v4 (v2025.03.14) |
| Aug 15, 2025 | 44.22% (0.44221) | 97.45th | v4 (v2025.03.14) |
| Aug 4, 2025 | 39.12% (0.39116) | 97.15th | v4 (v2025.03.14) |
| Aug 1, 2025 | 17.57% (0.17568) | 94.86th | v4 (v2025.03.14) |
| Jul 30, 2025 | 39.12% (0.39116) | 97.14th | v4 (v2025.03.14) |
| Jul 24, 2025 | 42.82% (0.42817) | 97.34th | v4 (v2025.03.14) |
| Jul 4, 2025 | 41.38% (0.41379) | 97.24th | v4 (v2025.03.14) |
| Jul 1, 2025 | 29.19% (0.29186) | 96.38th | v4 (v2025.03.14) |
| Jun 19, 2025 | 41.38% (0.41379) | 97.23th | v4 (v2025.03.14) |
| Jun 8, 2025 | 42.82% (0.42817) | 97.30th | v4 (v2025.03.14) |
| Jun 4, 2025 | 41.38% (0.41379) | 97.22th | v4 (v2025.03.14) |
| Jun 1, 2025 | 29.71% (0.29711) | 96.39th | v4 (v2025.03.14) |
| May 4, 2025 | 42.82% (0.42817) | 97.29th | v4 (v2025.03.14) |
| May 1, 2025 | 31.01% (0.31010) | 96.48th | v4 (v2025.03.14) |
| Mar 30, 2025 | 42.82% (0.42817) | 97.21th | v4 (v2025.03.14) |
| Mar 29, 2025 | 55.75% (0.55750) | 97.22th | v4 (v2025.03.14) |
| Mar 18, 2025 | 42.82% (0.42817) | 97.20th | v4 (v2025.03.14) |
| Mar 17, 2025 | 41.38% (0.41379) | 97.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.82% (0.00824) | 82.62th | v3 (v2023.03.01) |
| Dec 14, 2023 | 1.17% (0.01166) | 83.31th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.65% (0.01645) | 86.11th | v3 (v2023.03.01) |
| Sep 23, 2023 | 1.22% (0.01224) | 83.72th | v3 (v2023.03.01) |
| Sep 3, 2023 | 1.21% (0.01208) | 83.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.43% (0.01426) | 84.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.24% (0.05242) | 89.75th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.24% (0.05242) | 75.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 22.04% (0.22038) | 94.75th | v1 |
| Jun 8, 2021 | 22.04% (0.22038) | 0.00th | v1 |
| Jun 6, 2021 | 20.84% (0.20840) | 0.00th | v5 (v2026.06.15) |
| Apr 14, 2021 | 20.02% (0.20021) | 0.00th | v1 |
Weaknesses (1)
References (48)
- http://www.debian.org/security/2017/dsa-3896 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/99134 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038711 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2478 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2479 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:2483 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3193 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3194 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3195 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3475 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3476 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2017:3477 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-3169 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1463197 Issue Tracking
- https://github.com/gottburgm/Exploits/tree/master/CVE-2017-3169 x_refsource_MISC
- https://httpd.apache.org/security/vulnerabilities_22.html
- https://httpd.apache.org/security/vulnerabilities_24.html
- 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/84bf7fcc5cad35d355f11839cbdd13cbc5ffc1d34675090bff0f96ae%40%3Cdev.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%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/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%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/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%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/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%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://lists.apache.org/thread.html/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2017-3169
- https://security.gentoo.org/glsa/201710-32 vendor-advisoryx_refsource_GENTOO
- https://security.netapp.com/advisory/ntap-20180601-0002/ x_refsource_CONFIRM
- https://support.apple.com/HT208221 x_refsource_CONFIRM
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2017-3169
- https://www.nomachine.com/SU08O00185 x_refsource_CONFIRMMitigationThird Party Advisory
- https://www.tenable.com/security/tns-2019-09 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Jun 20, 2017
Updated Aug 5, 2024
Reserved Dec 5, 2016
Link CVE-2017-3169
CISA Vulnrichment
Updated n/a