Vulnerability · Published Mar 7, 2023 · Assigned by apache
CVE-2023-27522Apache HTTP Server: mod_proxy_uwsgi HTTP response splitting
High 7.5
In plain English
A high-severity security flaw 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 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.1%top 17.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | httpd | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | httpd | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:9 | httpd-core | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | httpd-devel | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | httpd-devel | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | httpd-filesystem | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | httpd-filesystem | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | httpd-manual | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | httpd-manual | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | httpd-tools | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | httpd-tools | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | mod_http2 | 1.15.7-8.module_el8.8.0+3554+ec1058a7.3 | ALSA-2023:5050 |
| AlmaLinux:8 | mod_ldap | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | mod_ldap | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:9 | mod_lua | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa | ALSA-2023:5050 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.6.0+3031+fb177b09 | ALSA-2023:5050 |
| AlmaLinux:8 | mod_proxy_html | 1:2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | mod_proxy_html | 1:2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | mod_session | 2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | mod_session | 2.4.57-5.el9 | ALSA-2023:6403 |
| AlmaLinux:8 | mod_ssl | 1:2.4.37-56.module_el8.8.0+3605+a3cf1030.7 | ALSA-2023:5050 |
| AlmaLinux:9 | mod_ssl | 1:2.4.57-5.el9 | ALSA-2023:6403 |
| Alpine:v3.20 | apache2 | 2.4.56-r0 | ALPINE-CVE-2023-27522 |
| Alpine:v3.21 | apache2 | 2.4.56-r0 | ALPINE-CVE-2023-27522 |
| Alpine:v3.22 | apache2 | 2.4.56-r0 | ALPINE-CVE-2023-27522 |
| Alpine:v3.23 | apache2 | 2.4.56-r0 | ALPINE-CVE-2023-27522 |
| Alpine:v3.24 | apache2 | 2.4.56-r0 | ALPINE-CVE-2023-27522 |
| Debian:12 | apache2 | 2.4.56-1 | DEBIAN-CVE-2023-27522 |
| Debian:13 | apache2 | 2.4.56-1 | DEBIAN-CVE-2023-27522 |
| Debian:14 | apache2 | 2.4.56-1 | DEBIAN-CVE-2023-27522 |
| PyPI | uwsgi | 2.0.22 | GHSA-vcph-37mh-fqrh |
| PyPI | uwsgi | 2.0.22 | PYSEC-2026-1058 |
| Rocky Linux:8 | httpd | 0:2.4.37-56.module+el8.8.0+1284+07ef499e.6 | RLSA-2023:5050 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-8.module+el8.8.0+1284+07ef499e.3 | RLSA-2023:5050 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.8.0+1271+9ed9553d | RLSA-2023:5050 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.4 | UBUNTU-CVE-2023-27522 |
| Ubuntu:22.04:LTS | apache2 | 2.4.52-1ubuntu4.4 | USN-5942-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.30 – through 2.4.55 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N