Unrated severityNVD Advisory· Published Apr 4, 2024· Updated Nov 4, 2025

Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames

CVE-2024-27316

Description

HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Nghttp2/Nghttp2llm-fuzzy
osv-coords50 versions
pkg:bitnami/apache pkg:rpm/almalinux/httpd pkg:rpm/almalinux/httpd-devel pkg:rpm/almalinux/httpd-filesystem pkg:rpm/almalinux/httpd-manual pkg:rpm/almalinux/httpd-tools pkg:rpm/almalinux/mod_http2 pkg:rpm/almalinux/mod_ldap pkg:rpm/almalinux/mod_md pkg:rpm/almalinux/mod_proxy_html pkg:rpm/almalinux/mod_session pkg:rpm/almalinux/mod_ssl pkg:rpm/opensuse/apache2-devel&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/apache2&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2-event&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2-manual&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2-prefork&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2-utils&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/apache2-worker&distro=openSUSE%20Leap%2015.6 pkg:rpm/suse/apache2-devel&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6 pkg:rpm/suse/apache2&distro=SUSE%20Enterprise%20Storage%207.1 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/apache2&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/apache2&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/apache2-event&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP6 pkg:rpm/suse/apache2-prefork&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/apache2-tls13&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/apache2-tls13&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/apache2-tls13&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/apache2-utils&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6 pkg:rpm/suse/apache2-worker&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6
>= 2.4.17, < 2.4.59+ 49 more
- (no CPE)range: >= 2.4.17, < 2.4.59
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 1.15.7-8.module_el8.9.0+3809+48080a14.5.alma.1
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa
- (no CPE)range: < 1:2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 1:2.4.37-62.module_el8.9.0+3646+acd210d0
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150200.3.62.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.51-150400.6.17.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.51-35.41.1
- (no CPE)range: < 2.4.58-150600.5.3.1
- (no CPE)range: < 2.4.58-150600.5.3.1
Apache/HTTP Servercpe-rescue
Range: 2.4.17

Patches

Vulnerability mechanics

References

httpd.apache.org/security/vulnerabilities_24.htmlmitrevendor-advisory
seclists.org/fulldisclosure/2024/Jul/18mitre
www.openwall.com/lists/oss-security/2024/04/04/4mitre
support.apple.com/kb/HT214119mitre
www.openwall.com/lists/oss-security/2024/04/03/16mitre

News mentions

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epss	0.073
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ransomware	0.000