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TI-2024-25715 Aliases CVE-2024-38474GHSA-x6g9-g4wf-qrf7

Apache HTTP Server weakness with encoded question marks in backreferences

Priority MEDIUM 47CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02456 84th percentileScored 2026-11-07
Fix Fixed Red Hat: 12 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache HTTP Server2.4.0 – 2.4.59—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.4.0 – 2.4.59 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*2.4.0 to before 2.4.60VulnerableApache
cpe:2.3:o:netapp:clustered_data_ontap:9.0:*:*:*:*:*:*:*9.0VulnerableNetApp
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.4.0 to before 2.4.60 Vulnerable ·Apache
  • cpe:2.3:o:netapp:clustered_data_ontap:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·NetApp

Remediation

Red Hat 12 advisories

  • RHSA-2024:5239 Released 2024-08-13 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP5 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd-2.4.57-13.el7jbcs, jbcs-httpd24-httpd-devel-2.4.57-13.el7jbcs, jbcs-httpd24-httpd-manual-2.4.57-13.el7jbcs +12
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd-2.4.57-13.el8jbcs, jbcs-httpd24-httpd-devel-2.4.57-13.el8jbcs, jbcs-httpd24-httpd-manual-2.4.57-13.el8jbcs +12
  • RHSA-2024:5240 Released 2024-08-13 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP5 security update
    • Red Hat JBoss Core Services
  • RHSA-2024:4943 Released 2024-07-31 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) httpd-2.4.6-99.el7_9.2, httpd-devel-2.4.6-99.el7_9.2, httpd-manual-2.4.6-99.el7_9.2 +3
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) mod_ldap-2.4.6-99.el7_9.2, mod_proxy_html-1:2.4.6-99.el7_9.2
Show 9 more Red Hat advisories
  • RHSA-2024:4938 Released 2024-07-31 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux Server AUS (v. 7.7) httpd-2.4.6-90.el7_7.4, httpd-devel-2.4.6-90.el7_7.4, httpd-manual-2.4.6-90.el7_7.4 +3
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.7) mod_ldap-2.4.6-90.el7_7.4, mod_proxy_html-1:2.4.6-90.el7_7.4
  • RHSA-2024:4862 Released 2024-07-25 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) httpd-2.4.53-11.el9_2.8, httpd-core-2.4.53-11.el9_2.8, httpd-devel-2.4.53-11.el9_2.8 +8
  • RHSA-2024:4863 Released 2024-07-25 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) httpd-2.4.51-7.el9_0.7, httpd-devel-2.4.51-7.el9_0.7, httpd-filesystem-2.4.51-7.el9_0.7 +7
  • RHSA-2024:4830 Released 2024-07-24 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.4) httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.src::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.x86_64::httpd:2.4, httpd-devel-2.4.37-39.module+el8.4.0+22127+467cc488.8.x86_64::httpd:2.4 +11
    • Red Hat Enterprise Linux AppStream E4S (v.8.4) httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.ppc64le::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.src::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.x86_64::httpd:2.4 +20
    • Red Hat Enterprise Linux AppStream TUS (v.8.4) httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.src::httpd:2.4, httpd-2.4.37-39.module+el8.4.0+22127+467cc488.8.x86_64::httpd:2.4, httpd-devel-2.4.37-39.module+el8.4.0+22127+467cc488.8.x86_64::httpd:2.4 +11
  • RHSA-2024:4827 Released 2024-07-24 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream AUS (v.8.6) httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.src::httpd:2.4, httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.x86_64::httpd:2.4, httpd-devel-2.4.37-47.module+el8.6.0+22124+21ed7001.9.x86_64::httpd:2.4 +11
    • Red Hat Enterprise Linux AppStream E4S (v.8.6) httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.aarch64::httpd:2.4, httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.ppc64le::httpd:2.4, httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.s390x::httpd:2.4 +38
    • Red Hat Enterprise Linux AppStream TUS (v.8.6) httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.src::httpd:2.4, httpd-2.4.37-47.module+el8.6.0+22124+21ed7001.9.x86_64::httpd:2.4, httpd-devel-2.4.37-47.module+el8.6.0+22124+21ed7001.9.x86_64::httpd:2.4 +11
  • RHSA-2024:4820 Released 2024-07-24 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream AUS (v. 8.2) httpd-2.4.37-21.module+el8.2.0+22128+68c62a5c.8.src::httpd:2.4, httpd-2.4.37-21.module+el8.2.0+22128+68c62a5c.8.x86_64::httpd:2.4, httpd-devel-2.4.37-21.module+el8.2.0+22128+68c62a5c.8.x86_64::httpd:2.4 +11
  • RHSA-2024:4726 Released 2024-07-23 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux AppStream (v. 9) httpd-2.4.57-11.el9_4, httpd-core-2.4.57-11.el9_4, httpd-devel-2.4.57-11.el9_4 +8
  • RHSA-2024:4719 Released 2024-07-23 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream EUS (v.8.8) httpd-2.4.37-56.module+el8.8.0+22079+e03f6970.8.aarch64::httpd:2.4, httpd-2.4.37-56.module+el8.8.0+22079+e03f6970.8.ppc64le::httpd:2.4, httpd-2.4.37-56.module+el8.8.0+22079+e03f6970.8.s390x::httpd:2.4 +38
  • RHSA-2024:4720 Released 2024-07-23 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.aarch64::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.ppc64le::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.s390x::httpd:2.4 +38

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:4720
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:4726
Red Hat Enterprise Linux AppStream AUS (v. 8.2)Fixed RHSA-2024:4820
Red Hat Enterprise Linux AppStream AUS (v.8.4)Fixed RHSA-2024:4830
Red Hat Enterprise Linux AppStream AUS (v.8.6)Fixed RHSA-2024:4827
Red Hat Enterprise Linux AppStream E4S (v.8.4)Fixed RHSA-2024:4830
Red Hat Enterprise Linux AppStream E4S (v.8.6)Fixed RHSA-2024:4827
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2024:4863
Red Hat Enterprise Linux AppStream EUS (v.8.8)Fixed RHSA-2024:4719
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:4862
Red Hat Enterprise Linux AppStream TUS (v.8.4)Fixed RHSA-2024:4830
Red Hat Enterprise Linux AppStream TUS (v.8.6)Fixed RHSA-2024:4827
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2024:4943
Red Hat Enterprise Linux Server AUS (v. 7.7)Fixed RHSA-2024:4938
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2024:4943
Red Hat Enterprise Linux Server Optional AUS (v. 7.7)Fixed RHSA-2024:4938
Red Hat JBoss Core ServicesFixed RHSA-2024:5240
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2024:5239
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2024:5239
Not affected: 2 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-38474
  2. 2026-10-03 Alias added: GHSA-x6g9-g4wf-qrf7
  3. 2026-10-09 Fix available: RHSA-2024:5240 · Red Hat
  4. 2026-11-05 Fix available: Red Hat JBoss Core Services · Red Hat

References

Advisory 2

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences