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TI-2017-02384 Aliases CVE-2017-3169GHSA-p3gj-wq33-qg67

NULL pointer dereference in Apache HTTP Server

Priority MEDIUM 61CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 30 fixed, 5 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

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.

Why it matters now

EPSS 0.19953 97th percentileScored 2026-11-07
Fix Partial Red Hat: 9 advisoriesRed Hat: 30 fixed, 5 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache HTTP Server2.2.0 to 2.2.32; 2.4.0 to 2.4.25—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.2.0 to 2.2.32; 2.4.0 to 2.4.25 Fixed in — No fix listed CNA

CPE configurations NVD · 34

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:*2.2.0VulnerableApache
cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:*2.2.2VulnerableApache
cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:*2.2.3VulnerableApache
cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:*2.2.11VulnerableApache
cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:*2.2.12VulnerableApache
cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:*2.2.13VulnerableApache
cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:*2.2.14VulnerableApache
cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:*2.2.15VulnerableApache
cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:*2.2.16VulnerableApache
cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:*2.2.17VulnerableApache
  • cpe:2.3:a:apache:http_server:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.2:*:*:*:*:*:*:* Versions 2.2.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.3:*:*:*:*:*:*:* Versions 2.2.3 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.11:*:*:*:*:*:*:* Versions 2.2.11 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.12:*:*:*:*:*:*:* Versions 2.2.12 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.13:*:*:*:*:*:*:* Versions 2.2.13 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.14:*:*:*:*:*:*:* Versions 2.2.14 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.15:*:*:*:*:*:*:* Versions 2.2.15 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.16:*:*:*:*:*:*:* Versions 2.2.16 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.17:*:*:*:*:*:*:* Versions 2.2.17 Vulnerable ·Apache
Show 24 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:*2.2.18VulnerableApache
cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:*2.2.19VulnerableApache
cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:*2.2.20VulnerableApache
cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:*2.2.21VulnerableApache
cpe:2.3:a:apache:http_server:2.2.22:*:*:*:*:*:*:*2.2.22VulnerableApache
cpe:2.3:a:apache:http_server:2.2.23:*:*:*:*:*:*:*2.2.23VulnerableApache
cpe:2.3:a:apache:http_server:2.2.24:*:*:*:*:*:*:*2.2.24VulnerableApache
cpe:2.3:a:apache:http_server:2.2.25:*:*:*:*:*:*:*2.2.25VulnerableApache
cpe:2.3:a:apache:http_server:2.2.26:*:*:*:*:*:*:*2.2.26VulnerableApache
cpe:2.3:a:apache:http_server:2.2.27:*:*:*:*:*:*:*2.2.27VulnerableApache
cpe:2.3:a:apache:http_server:2.2.29:*:*:*:*:*:*:*2.2.29VulnerableApache
cpe:2.3:a:apache:http_server:2.2.30:*:*:*:*:*:*:*2.2.30VulnerableApache
cpe:2.3:a:apache:http_server:2.2.31:*:*:*:*:*:*:*2.2.31VulnerableApache
cpe:2.3:a:apache:http_server:2.2.32:*:*:*:*:*:*:*2.2.32VulnerableApache
cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:*2.4.1VulnerableApache
cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:*2.4.2VulnerableApache
cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:*2.4.10VulnerableApache
cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:*2.4.12VulnerableApache
cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:*2.4.16VulnerableApache
cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:*2.4.17VulnerableApache
cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:*2.4.18VulnerableApache
cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:*2.4.20VulnerableApache
cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:*2.4.23VulnerableApache
cpe:2.3:a:apache:http_server:2.4.25:*:*:*:*:*:*:*2.4.25VulnerableApache
  • cpe:2.3:a:apache:http_server:2.2.18:*:*:*:*:*:*:* Versions 2.2.18 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.19:*:*:*:*:*:*:* Versions 2.2.19 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.20:*:*:*:*:*:*:* Versions 2.2.20 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.21:*:*:*:*:*:*:* Versions 2.2.21 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.22:*:*:*:*:*:*:* Versions 2.2.22 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.23:*:*:*:*:*:*:* Versions 2.2.23 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.24:*:*:*:*:*:*:* Versions 2.2.24 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.25:*:*:*:*:*:*:* Versions 2.2.25 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.26:*:*:*:*:*:*:* Versions 2.2.26 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.27:*:*:*:*:*:*:* Versions 2.2.27 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.29:*:*:*:*:*:*:* Versions 2.2.29 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.30:*:*:*:*:*:*:* Versions 2.2.30 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.31:*:*:*:*:*:*:* Versions 2.2.31 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.2.32:*:*:*:*:*:*:* Versions 2.2.32 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.10:*:*:*:*:*:*:* Versions 2.4.10 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.12:*:*:*:*:*:*:* Versions 2.4.12 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.16:*:*:*:*:*:*:* Versions 2.4.16 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.17:*:*:*:*:*:*:* Versions 2.4.17 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.18:*:*:*:*:*:*:* Versions 2.4.18 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.20:*:*:*:*:*:*:* Versions 2.4.20 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.23:*:*:*:*:*:*:* Versions 2.4.23 Vulnerable ·Apache
  • cpe:2.3:a:apache:http_server:2.4.25:*:*:*:*:*:*:* Versions 2.4.25 Vulnerable ·Apache

Remediation

Red Hat 9 advisories

  • RHSA-2017:3477 Released 2017-12-15 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.23 security update
    • Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-httpd-2.4.23-125.jbcs.el6, jbcs-httpd24-httpd-devel-2.4.23-125.jbcs.el6, jbcs-httpd24-httpd-libs-2.4.23-125.jbcs.el6 +9
  • RHSA-2017:3476 Released 2017-12-15 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.23 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd-2.4.23-125.jbcs.el7, jbcs-httpd24-httpd-devel-2.4.23-125.jbcs.el7, jbcs-httpd24-httpd-libs-2.4.23-125.jbcs.el7 +9
  • RHSA-2017:3475 Released 2017-12-15 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.23 security update
    • Red Hat JBoss Core Services
Show 6 more Red Hat advisories
  • RHSA-2017:3194 Released 2017-11-13 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3) httpd-2.4.6-45.el7_3.5, httpd-devel-2.4.6-45.el7_3.5, httpd-manual-2.4.6-45.el7_3.5 +5
    • Red Hat Enterprise Linux Server EUS (v. 7.3) httpd-2.4.6-45.el7_3.5, httpd-devel-2.4.6-45.el7_3.5, httpd-manual-2.4.6-45.el7_3.5 +2
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.3) mod_ldap-2.4.6-45.el7_3.5, mod_proxy_html-1:2.4.6-45.el7_3.5, mod_session-2.4.6-45.el7_3.5
  • RHSA-2017:3195 Released 2017-11-13 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) httpd-2.2.15-47.el6_7.5, httpd-tools-2.2.15-47.el6_7.5
    • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) httpd-devel-2.2.15-47.el6_7.5, httpd-manual-2.2.15-47.el6_7.5, mod_ssl-1:2.2.15-47.el6_7.5
    • Red Hat Enterprise Linux Server EUS (v. 6.7) httpd-2.2.15-47.el6_7.5, httpd-devel-2.2.15-47.el6_7.5, httpd-devel-2.2.15-47.el6_7.5.ppc +3
  • RHSA-2017:3193 Released 2017-11-13 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2) httpd-2.4.6-40.el7_2.6, httpd-devel-2.4.6-40.el7_2.6, httpd-manual-2.4.6-40.el7_2.6 +5
    • Red Hat Enterprise Linux Server EUS (v. 7.2) httpd-2.4.6-40.el7_2.6, httpd-devel-2.4.6-40.el7_2.6, httpd-manual-2.4.6-40.el7_2.6 +2
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.2) mod_ldap-2.4.6-40.el7_2.6, mod_proxy_html-1:2.4.6-40.el7_2.6, mod_session-2.4.6-40.el7_2.6
  • RHSA-2017:2483 Released 2017-08-16 · Red Hat rating Important
    httpd24-httpd security update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) httpd24-httpd-2.4.25-9.el6.1, httpd24-httpd-devel-2.4.25-9.el6.1, httpd24-httpd-manual-2.4.25-9.el6.1 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) httpd24-httpd-2.4.25-9.el7.1, httpd24-httpd-devel-2.4.25-9.el7.1, httpd24-httpd-manual-2.4.25-9.el7.1 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) httpd24-httpd-2.4.25-9.el6.1, httpd24-httpd-devel-2.4.25-9.el6.1, httpd24-httpd-manual-2.4.25-9.el6.1 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3) httpd24-httpd-2.4.25-9.el7.1, httpd24-httpd-devel-2.4.25-9.el7.1, httpd24-httpd-manual-2.4.25-9.el7.1 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) httpd24-httpd-2.4.25-9.el6.1, httpd24-httpd-devel-2.4.25-9.el6.1, httpd24-httpd-manual-2.4.25-9.el6.1 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) httpd24-httpd-2.4.25-9.el7.1, httpd24-httpd-devel-2.4.25-9.el7.1, httpd24-httpd-manual-2.4.25-9.el7.1 +5
  • RHSA-2017:2479 Released 2017-08-15 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux Client Optional (v. 7) httpd-2.4.6-67.el7_4.2, httpd-devel-2.4.6-67.el7_4.2, httpd-manual-2.4.6-67.el7_4.2 +5
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) httpd-2.4.6-67.el7_4.2, httpd-devel-2.4.6-67.el7_4.2, httpd-manual-2.4.6-67.el7_4.2 +5
    • Red Hat Enterprise Linux Server (v. 7) httpd-2.4.6-67.el7_4.2, httpd-devel-2.4.6-67.el7_4.2, httpd-manual-2.4.6-67.el7_4.2 +3
    • Red Hat Enterprise Linux Server Optional (v. 7) mod_ldap-2.4.6-67.el7_4.2, mod_proxy_html-1:2.4.6-67.el7_4.2
    • Red Hat Enterprise Linux Workstation (v. 7) httpd-2.4.6-67.el7_4.2, httpd-devel-2.4.6-67.el7_4.2, httpd-manual-2.4.6-67.el7_4.2 +3
    • Red Hat Enterprise Linux Workstation Optional (v. 7) mod_ldap-2.4.6-67.el7_4.2, mod_proxy_html-1:2.4.6-67.el7_4.2
  • RHSA-2017:2478 Released 2017-08-15 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux Desktop (v. 6) httpd-2.2.15-60.el6_9.5, httpd-tools-2.2.15-60.el6_9.5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) httpd-devel-2.2.15-60.el6_9.5, httpd-manual-2.2.15-60.el6_9.5, mod_ssl-1:2.2.15-60.el6_9.5
    • Red Hat Enterprise Linux HPC Node (v. 6) httpd-2.2.15-60.el6_9.5, httpd-tools-2.2.15-60.el6_9.5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) httpd-devel-2.2.15-60.el6_9.5, httpd-manual-2.2.15-60.el6_9.5, mod_ssl-1:2.2.15-60.el6_9.5
    • Red Hat Enterprise Linux Server (v. 6) httpd-2.2.15-60.el6_9.5, httpd-devel-2.2.15-60.el6_9.5, httpd-devel-2.2.15-60.el6_9.5.ppc +3
    • Red Hat Enterprise Linux Workstation (v. 6) httpd-2.2.15-60.el6_9.5, httpd-devel-2.2.15-60.el6_9.5, httpd-manual-2.2.15-60.el6_9.5 +2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Apache HTTP Server — DSA-3896

    4 records Highest priority Priority HIGH 2 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2017-05315 Memory corruption in Apache HTTP ServerPriority HIGH 69
    • TI-2017-05304 Out-of-bounds read in Apache HTTP ServerPriority HIGH 66
    • TI-2017-02383 Improper authentication in Apache HTTP ServerPriority MEDIUM 61
  • Advisory ·

    Apache HTTP Server — RHSA-2017:2479

    4 records Highest priority Priority HIGH 2 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2017-05315 Memory corruption in Apache HTTP ServerPriority HIGH 69
    • TI-2017-05304 Out-of-bounds read in Apache HTTP ServerPriority HIGH 66
    • TI-2017-02383 Improper authentication in Apache HTTP ServerPriority MEDIUM 61
Show 1 more group
  • Advisory ·

    Apache HTTP Server — RHSA-2017:2478

    3 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2017-05315 Memory corruption in Apache HTTP ServerPriority HIGH 69
    • TI-2017-02383 Improper authentication in Apache HTTP ServerPriority MEDIUM 61

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Application Platform 6AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Web Server 1AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Web Server 2AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Web Server 3AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2479
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:2479
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2)Fixed RHSA-2017:3193
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.3)Fixed RHSA-2017:3194
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux HPC Node EUS (v. 6.7)Fixed RHSA-2017:3195
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7)Fixed RHSA-2017:3195
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2479
Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2017:3195
Red Hat Enterprise Linux Server EUS (v. 7.2)Fixed RHSA-2017:3193
Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2017:3194
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2479
Red Hat Enterprise Linux Server Optional EUS (v. 7.2)Fixed RHSA-2017:3193
Red Hat Enterprise Linux Server Optional EUS (v. 7.3)Fixed RHSA-2017:3194
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:2478
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2479
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2479
Red Hat JBoss Core ServicesFixed RHSA-2017:3475
Red Hat JBoss Core Services on RHEL 6 ServerFixed RHSA-2017:3477
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2017:3476
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7)Fixed RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.3)Fixed RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:2483
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2483
Not affected: 1 product
  • Red Hat JBoss Enterprise Application Platform 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-3169
  2. 2026-10-03 Alias added: GHSA-p3gj-wq33-qg67

References

Other 28

  • TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
See all 349 →

Sources