Apache HTTP Server: HTTP response splitting
Priority LOW 39CWE-1284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Partial Red Hat: 5 fixed, 8 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03914 90th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 5 fixed, 8 without a fix
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache HTTP Server | up to 2.4.58 | — | No fix listed | CNA |
- Apache HTTP Server VendorApache Affected up to 2.4.58 Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* | before 2.4.59 | Vulnerable | Apache |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* | 39 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* | 40 | Vulnerable | Fedoraproject |
| cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:* | 9 | Vulnerable | NetApp |
| cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:* | 10 | Vulnerable | NetApp |
| cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Broadcom |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | before 14.6 | Vulnerable | Apple |
- cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions before 2.4.59 Vulnerable ·Apache
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* Versions 39 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:* Versions 40 Vulnerable ·Fedoraproject
- cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·NetApp
- cpe:2.3:a:netapp:ontap_tools:10:*:*:*:*:vmware_vsphere:*:* Versions 10 Vulnerable ·NetApp
- cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Broadcom
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions before 14.6 Vulnerable ·Apple
Remediation
Red Hat 4 advisories
- RHSA-2024:9306 Released 2024-11-12 · Red Hat rating Moderatehttpd security update
- Red Hat Enterprise Linux AppStream (v. 9) httpd-2.4.62-1.el9, httpd-core-2.4.62-1.el9, httpd-devel-2.4.62-1.el9 +8
- RHSA-2024:6928 Released 2024-09-24 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP6 security update
- Red Hat JBoss Core Services
- RHSA-2024:6927 Released 2024-09-24 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 SP6 security update
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd-2.4.57-15.el7jbcs, jbcs-httpd24-httpd-devel-2.4.57-15.el7jbcs, jbcs-httpd24-httpd-manual-2.4.57-15.el7jbcs +8
- Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd-2.4.57-15.el8jbcs, jbcs-httpd24-httpd-devel-2.4.57-15.el8jbcs, jbcs-httpd24-httpd-manual-2.4.57-15.el8jbcs +8
Show 1 more Red Hat advisories
- RHSA-2024:4197 Released 2024-07-01 · Red Hat rating Moderatehttpd:2.4/httpd security update
- Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-65.module+el8.10.0+21982+14717793.aarch64::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+21982+14717793.ppc64le::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+21982+14717793.s390x::httpd:2.4 +38
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Pipelines | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Enterprise Application Platform 6 | Affected | No fix planned: Out of support scope |
| Red Hat OpenShift GitOps | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 16.1 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Out of support scope |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:4197 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9306 |
| Red Hat JBoss Core Services | Fixed | RHSA-2024:6928 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2024:6927 |
| Red Hat JBoss Core Services on RHEL 8 | Fixed | RHSA-2024:6927 |
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat JBoss Core Services on RHEL 7 Server
- Red Hat JBoss Core Services on RHEL 8
- Red Hat OpenStack Platform 17.1
- Red Hat OpenStack Platform 18.0
Timeline
- 2026-10-02 Threatist record created from CVE-2023-38709
- 2026-10-03 Alias added: GHSA-9fvf-9v35-97qv
- 2026-10-06 EPSS moved to the 90th–95th percentile
- 2026-10-09 Fix available: RHSA-2024:6928 · Red Hat
- 2026-11-07 Fix available: Red Hat JBoss Core Services · Red Hat
References
Advisory 9
- https://httpd.apache.org/security/vulnerabilities_24.html
- https://security.netapp.com/advisory/ntap-20240415-0013/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WNV4SZAPVS43DZWNFU7XBYYOZEZMI4ZC/
- http://www.openwall.com/lists/oss-security/2024/04/04/3
- https://lists.fedoraproject.org/archives/list/[email protected]/message/I2N2NZEX3MR64IWSGL3QGN7KSRUGAEMF/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/LX5U34KYGDYPRH3AJ6MDDCBJDWDPXNVJ/
- https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
- https://support.apple.com/kb/HT214119
- http://seclists.org/fulldisclosure/2024/Jul/18
More Apache Http Server vulnerabilities
- 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
Sources
- CVE-2023-38709 · CVE Program
- CVE-2023-38709 · NVD
- FIRST EPSS
- GHSA-9fvf-9v35-97qv · GitHub Advisory Database · CC BY 4.0
- CVE-2023-38709 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences