CVE-2023-38709
Apache HTTP Server: HTTP response splitting
02 Description
Apache HTTP Server: HTTP response splitting
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 3.91% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 89.9% of scored records. A rank, not a probability.
- NVD base score
- 7.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-04-04 19:19Z2 YR AGO
- Last updated
- 2025-11-04 21:08Z11 MO AGO
- Reserved
- 2023-07-24
- Assigning CNA
- apache
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- Data version
- 5.2
- Document digest
- 4c5abb8801315d45cadd96e9d9ebeed5030f6125435e4fc18138da387926db64
05 Affected products
06 References
- httpd.apache.orghttps://httpd.apache.org/security/vulnerabilities_24.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240415-0013/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WNV4SZAPVS43DZWNFU7XBYYOZEZMI4ZC/
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2024/04/04/3
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I2N2NZEX3MR64IWSGL3QGN7KSRUGAEMF/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LX5U34KYGDYPRH3AJ6MDDCBJDWDPXNVJ/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
- support.apple.comhttps://support.apple.com/kb/HT214119
- seclists.orghttp://seclists.org/fulldisclosure/2024/Jul/18
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/07/10/2
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/07/10/3
07 Fixed in
AlmaLinux 8
- httpd Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-filesystem Fixed in 2.4.37-65.module_el8.10.0+3860+a6e26e50
- httpd-manual Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-tools Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_http2 Fixed
A version is affected if any line below covers it.
- Affected before 1.15.7-10.module_el8.10.0+3832+564e7653
- Affected before 1.15.7-10.module_el8.10.0+4233+8b7d9181.7
- mod_ldap Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_md Fixed
A version is affected if any line below covers it.
- Affected before 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2
- Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- Affected before 1:2.0.8-8.module_el8.6.0+3031+fb177b09
- mod_proxy_html Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 1:2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_session Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_ssl Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 1:2.4.37-65.module_el8.10.0+4233+8b7d9181.9
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- httpd Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-core Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-filesystem Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-manual Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-tools Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_ldap Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_lua Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_proxy_html Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.62-1.el9
- Affected before 1:2.4.62-13.el9_8.5
- mod_session Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_ssl Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.62-1.el9
- Affected before 1:2.4.62-13.el9_8.5
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 10
- httpd Fixed in 2.4.63-13.el10_2.4
- httpd-core Fixed in 2.4.63-13.el10_2.4
- httpd-devel Fixed in 2.4.63-13.el10_2.4
- httpd-filesystem Fixed in 2.4.63-13.el10_2.4
- httpd-manual Fixed in 2.4.63-13.el10_2.4
- httpd-tools Fixed in 2.4.63-13.el10_2.4
- mod_ldap Fixed in 2.4.63-13.el10_2.4
- mod_lua Fixed in 2.4.63-13.el10_2.4
- mod_proxy_html Fixed in 1:2.4.63-13.el10_2.4
- mod_session Fixed in 2.4.63-13.el10_2.4
- mod_ssl Fixed in 1:2.4.63-13.el10_2.4
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- httpd Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-filesystem Fixed in 2.4.37-65.module_el8.10.0+3860+a6e26e50
- httpd-manual Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- httpd-tools Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_http2 Fixed
A version is affected if any line below covers it.
- Affected before 1.15.7-10.module_el8.10.0+3832+564e7653
- Affected before 1.15.7-10.module_el8.10.0+4233+8b7d9181.7
- mod_ldap Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_md Fixed
A version is affected if any line below covers it.
- Affected before 1:2.0.8-8.module_el8.10.0+4088+57f011c1.2
- Affected before 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- Affected before 1:2.0.8-8.module_el8.6.0+3031+fb177b09
- mod_proxy_html Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 1:2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_session Fixed
A version is affected if any line below covers it.
- Affected before 2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 2.4.37-65.module_el8.10.0+4233+8b7d9181.9
- mod_ssl Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.37-65.module_el8.10.0+3860+a6e26e50
- Affected before 1:2.4.37-65.module_el8.10.0+4233+8b7d9181.9
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- httpd Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-core Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-devel Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-filesystem Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-manual Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- httpd-tools Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_ldap Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_lua Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_proxy_html Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.62-1.el9
- Affected before 1:2.4.62-13.el9_8.5
- mod_session Fixed
A version is affected if any line below covers it.
- Affected before 2.4.62-1.el9
- Affected before 2.4.62-13.el9_8.5
- mod_ssl Fixed
A version is affected if any line below covers it.
- Affected before 1:2.4.62-1.el9
- Affected before 1:2.4.62-13.el9_8.5
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 10
- httpd Fixed in 2.4.63-13.el10_2.4
- httpd-core Fixed in 2.4.63-13.el10_2.4
- httpd-devel Fixed in 2.4.63-13.el10_2.4
- httpd-filesystem Fixed in 2.4.63-13.el10_2.4
- httpd-manual Fixed in 2.4.63-13.el10_2.4
- httpd-tools Fixed in 2.4.63-13.el10_2.4
- mod_ldap Fixed in 2.4.63-13.el10_2.4
- mod_lua Fixed in 2.4.63-13.el10_2.4
- mod_proxy_html Fixed in 1:2.4.63-13.el10_2.4
- mod_session Fixed in 2.4.63-13.el10_2.4
- mod_ssl Fixed in 1:2.4.63-13.el10_2.4
Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- apache2 Fixed in 2.4.59-1~deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- apache2 Fixed in 2.4.59-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- apache2 Fixed in 2.4.59-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- apache2 Fixed in 2.4.41-4ubuntu3.17
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- apache2 Fixed in 2.4.52-1ubuntu4.9
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- apache2 Fixed in 2.4.58-1ubuntu8.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- apache2 Fixed in 2.4.7-1ubuntu4.22+esm12Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- apache2 Fixed in 2.4.18-2ubuntu3.17+esm12Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- apache2 Fixed in 2.4.29-1ubuntu4.27+esm2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.