CVE-2024-27316 Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames
High 7.5
Published
Updated
Check this codebase for CVE-2024-27316 and fix it if it is affected.
What it is: CVE-2024-27316 is a high-severity denial of service vulnerability in Apache Http Server, published on 4 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-27316 in the wild and no public exploit code.
Affected packages and fixed versions:
- apache (Bitnami): affected from 2.4.17; fixed in 2.4.59
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2024-27316/ (Markdown: https://insights.sbomify.com/CVE-2024-27316/index.md)
Attackers can cause memory exhaustion and denial of service by sending endless HTTP/2 continuation frames to Apache HTTP Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-27316?
CVE-2024-27316 is a high-severity denial of service vulnerability in Apache Http Server, published on 4 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-770
Which versions are affected by CVE-2024-27316?
1 open source package ship an affected version, including apache. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
apache Bitnami | From 2.4.17 | 2.4.59 |
Linux distribution packages (39)
httpd AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
httpd-devel AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
httpd-filesystem AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
httpd-manual AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
httpd-tools AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
mod_http2 AlmaLinux:8 | All versions | 1.15.7-8.module_el8.9.0+3809+48080a14.5.alma.1 |
mod_ldap AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
mod_md AlmaLinux:8 | All versions | 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa |
mod_md AlmaLinux:8 | All versions | 1:2.0.8-8.module_el8.6.0+3031+fb177b09 |
mod_proxy_html AlmaLinux:8 | All versions | 1:2.4.37-62.module_el8.9.0+3646+acd210d0 |
mod_session AlmaLinux:8 | All versions | 2.4.37-62.module_el8.9.0+3646+acd210d0 |
mod_ssl AlmaLinux:8 | All versions | 1:2.4.37-62.module_el8.9.0+3646+acd210d0 |
mod_http2 AlmaLinux:9 | All versions | 1.15.19-5.el9_3.1 |
mod_http2 AlmaLinux:9 | All versions | 2.0.26-2.el9_4 |
httpd Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-filesystem Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-manual Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-tools Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
httpd-tools-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_http2 Red Hat:enterprise_linux:8::appstream | All versions | 0:1.15.7-8.module+el8.9.0+21652+2dd1200b.5 |
mod_http2-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.15.7-8.module+el8.9.0+21652+2dd1200b.5 |
mod_http2-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:1.15.7-8.module+el8.9.0+21652+2dd1200b.5 |
mod_ldap Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_ldap-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_md Red Hat:enterprise_linux:8::appstream | All versions | 1:2.0.8-8.module+el8.9.0+19080+567b90f8 |
mod_md-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:2.0.8-8.module+el8.9.0+19080+567b90f8 |
mod_md-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 1:2.0.8-8.module+el8.9.0+19080+567b90f8 |
mod_proxy_html Red Hat:enterprise_linux:8::appstream | All versions | 1:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_proxy_html-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_session Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_session-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_ssl Red Hat:enterprise_linux:8::appstream | All versions | 1:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_ssl-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 1:2.4.37-62.module+el8.9.0+19699+7a7a2044 |
mod_http2 Red Hat:enterprise_linux:9::appstream | All versions | 0:1.15.19-5.el9_3.1 |
mod_http2 Red Hat:enterprise_linux:9::appstream | All versions | 0:2.0.26-2.el9_4 |
mod_http2-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:1.15.19-5.el9_3.1 |
Products include Apache Http Server, Fedoraproject Fedora, Netapp Ontap.
How do I fix CVE-2024-27316?
Upgrade apache to 2.4.59 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-27316 being exploited?
There is no known exploitation of CVE-2024-27316 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Apache Http Server
Sources
Also known as ALPINE-CVE-2024-27316, ALSA-2024:1786, ALSA-2024:1872, ALSA-2024:2564, AZL-40001, AZL-40012 and 22 more.