Vulnerability · Published Apr 4, 2024 · Assigned by apache
CVE-2024-27316Apache HTTP Server: HTTP/2 DoS by memory exhaustion on endless continuation frames
High 7.5
In plain English
A high-severity resource allocation without limits in Apache HTTP Server from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 88.8% (higher than 99.8% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)88.8%top 0.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | httpd | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | httpd-devel | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | httpd-filesystem | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | httpd-manual | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | httpd-tools | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | mod_http2 | 1.15.7-8.module_el8.9.0+3809+48080a14.5.alma.1 | ALSA-2024:1786 |
| AlmaLinux:9 | mod_http2 | 2.0.26-2.el9_4 | ALSA-2024:2564 |
| AlmaLinux:9 | mod_http2 | 1.15.19-5.el9_3.1 | ALSA-2024:1872 |
| AlmaLinux:8 | mod_ldap | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa | ALSA-2024:1786 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.6.0+3031+fb177b09 | ALSA-2024:1786 |
| AlmaLinux:8 | mod_proxy_html | 1:2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | mod_session | 2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| AlmaLinux:8 | mod_ssl | 1:2.4.37-62.module_el8.9.0+3646+acd210d0 | ALSA-2024:1786 |
| Alpine:v3.20 | apache2 | 2.4.59-r0 | ALPINE-CVE-2024-27316 |
| Alpine:v3.21 | apache2 | 2.4.59-r0 | ALPINE-CVE-2024-27316 |
| Alpine:v3.22 | apache2 | 2.4.59-r0 | ALPINE-CVE-2024-27316 |
| Alpine:v3.23 | apache2 | 2.4.59-r0 | ALPINE-CVE-2024-27316 |
| Alpine:v3.24 | apache2 | 2.4.59-r0 | ALPINE-CVE-2024-27316 |
| Debian:12 | apache2 | 2.4.59-1~deb12u1 | DEBIAN-CVE-2024-27316 |
| Debian:12 | apache2 | 2.4.59-1~deb12u1 | DSA-5662-1 |
| Debian:13 | apache2 | 2.4.59-1 | DEBIAN-CVE-2024-27316 |
| Debian:14 | apache2 | 2.4.59-1 | DEBIAN-CVE-2024-27316 |
| Rocky Linux:8 | httpd | 0:2.4.37-62.module+el8.9.0+1436+2b7d5021 | RLSA-2024:1786 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-8.module+el8.9.0+1370+89cc8ad5.3 | RLSA-2024:1786 |
| Rocky Linux:9 | mod_http2 | 0:2.0.26-2.el9_4 | RLSA-2024:2564 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.9.0+1370+89cc8ad5 | RLSA-2024:1786 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.9 | USN-6729-1 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.9 | UBUNTU-CVE-2024-27316 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.1 | USN-6729-3 |
| Ubuntu:24.04:LTS | apache2 | 2.4.58-1ubuntu8.1 | UBUNTU-CVE-2024-27316 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.17 – through 2.4.58 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory
- https://www.openwall.com/lists/oss-security/2024/04/03/16
- http://www.openwall.com/lists/oss-security/2024/04/04/4
- https://support.apple.com/kb/HT214119
- http://seclists.org/fulldisclosure/2024/Jul/18
- https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MIUBKSCJGPJ6M2U63V6BKFDF725ODLG7/
- https://security.netapp.com/advisory/ntap-20240415-0013/
- https://www.kb.cert.org/vuls/id/421644
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FO73U3SLBYFGIW2YKXOK7RI4D6DJSZ2B/