Home/CVE/Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP r
CVE

CVE-2023-38709

Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP r

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.

HIGH · CVSS 7.3 EPSS 0.04358
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-1284Improper Validation of Specified Quantity in Input
▤

Affected Products & Versions

7
apache http server< 2.4.59
debian linuxall versions
fedoraproject fedoraall versions
netapp ontapall versions
netapp ontap toolsall versions
broadcom fabric operating systemall versions
apple macos< 14.6
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighRemote Access Tool - Renamed MeshAgent Execution - MacOS
producthighBinary Padding - MacOS
productmediumSuspicious Execution via macOS Script Editor
productmediumSystem Information Discovery Via Sysctl - MacOS
productmediumNew File Exclusion Added To Time Machine Via Tmutil - MacOS
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.1 · security@apache.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Apr 2024 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

22
suse-csafSUSE-SU-2025:02682-1
suse-csafSUSE-SU-2025:02683-1
suse-csafSUSE-SU-2025:02684-1
suse-csafSUSE-SU-2025:02685-1
suse-csafSUSE-SU-2025:02565-1
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2024/Jul/18Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/04/04/3Mailing ListThird Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2024/05/msg00013.htmlMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I2N2NZEX3MR64IWSGL3QGN7KSRUGAEMF/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LX5U34KYGDYPRH3AJ6MDDCBJDWDPXNVJ/Mailing ListThird Party Advisory
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