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01 Record

CVE-2024-38473

Apache HTTP Server proxy encoding problem

HighPUBLISHEDCNA: apache
CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
View raw JSON

02 Description

Apache HTTP Server proxy encoding problem

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 ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
25.87% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 97.7% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD analysis status
Analyzed. 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
2024-07-01 18:14Z2 YR AGO
Last updated
2025-02-13 17:53Z1 YR AGO
Reserved
2024-06-17
Assigning CNA
apache
Record state
PUBLISHED
Severity
High (CVSS 8.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weaknesses
  • CWE-116Improper Encoding or Escaping of OutputClass
Data version
5.1
Document digest
05217d1e5476fbc08b9a307bef65ec35cd0748ff1755ac9524c5b2e61d997c4c

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache HTTP Server2.4.0 to 2.4.59—
apache_software_foundationapache_http_server2.4.0 to 2.4.59—

06 References

07 Fixed in

AlmaLinux 8

  • httpd
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-devel
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-filesystem
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-manual
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-tools
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_http2
    Fixed in 1.15.7-10.module_el8.10.0+3832+564e7653
  • mod_ldap
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_md
    Fixed

    A version is affected if any line below covers it.

    • 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 in 1:2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_session
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_ssl
    Fixed in 1:2.4.37-65.module_el8.10.0+3872+9b8ab21e.1

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 in 2.4.57-11.el9_4
  • httpd-core
    Fixed in 2.4.57-11.el9_4
  • httpd-devel
    Fixed in 2.4.57-11.el9_4
  • httpd-filesystem
    Fixed in 2.4.57-11.el9_4
  • httpd-manual
    Fixed in 2.4.57-11.el9_4
  • httpd-tools
    Fixed in 2.4.57-11.el9_4
  • mod_ldap
    Fixed in 2.4.57-11.el9_4
  • mod_lua
    Fixed in 2.4.57-11.el9_4
  • mod_proxy_html
    Fixed in 1:2.4.57-11.el9_4
  • mod_session
    Fixed in 2.4.57-11.el9_4
  • mod_ssl
    Fixed in 1:2.4.57-11.el9_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 in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-devel
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-filesystem
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-manual
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • httpd-tools
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_http2
    Fixed in 1.15.7-10.module_el8.10.0+3832+564e7653
  • mod_ldap
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_md
    Fixed

    A version is affected if any line below covers it.

    • 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 in 1:2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_session
    Fixed in 2.4.37-65.module_el8.10.0+3872+9b8ab21e.1
  • mod_ssl
    Fixed in 1:2.4.37-65.module_el8.10.0+3872+9b8ab21e.1

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 in 2.4.57-11.el9_4
  • httpd-core
    Fixed in 2.4.57-11.el9_4
  • httpd-devel
    Fixed in 2.4.57-11.el9_4
  • httpd-filesystem
    Fixed in 2.4.57-11.el9_4
  • httpd-manual
    Fixed in 2.4.57-11.el9_4
  • httpd-tools
    Fixed in 2.4.57-11.el9_4
  • mod_ldap
    Fixed in 2.4.57-11.el9_4
  • mod_lua
    Fixed in 2.4.57-11.el9_4
  • mod_proxy_html
    Fixed in 1:2.4.57-11.el9_4
  • mod_session
    Fixed in 2.4.57-11.el9_4
  • mod_ssl
    Fixed in 1:2.4.57-11.el9_4

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.

Debian 12

  • apache2
    Fixed in 2.4.61-1~deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • apache2
    Fixed in 2.4.60-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • apache2
    Fixed in 2.4.60-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • apache2
    Fixed in 2.4.41-4ubuntu3.19

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 2.4.52-1ubuntu4.10

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 2.4.58-1ubuntu8.2

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+esm17
    Available 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 18.04 LTS

  • apache2
    Fixed in 2.4.29-1ubuntu4.27+esm7
    Available 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.