Vulnerability · Published Sep 16, 2021 · Assigned by apache
CVE-2021-36160mod_proxy_uwsgi out of bound read
High 7.5
In plain English
A high-severity out-of-bounds read 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 63.7% (higher than 99.2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)63.7%top 0.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | httpd | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | httpd | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-devel | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-devel | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-filesystem | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-filesystem | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-manual | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-manual | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-tools | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | httpd-tools | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | mod_http2 | 1.15.7-5.module_el8.6.0+2872+fe0ff7aa | ALSA-2022:1915 |
| AlmaLinux:8 | mod_ldap | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | mod_ldap | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | mod_md | 1:2.0.8-8.module_el8.6.0+2872+fe0ff7aa | ALSA-2022:1915 |
| AlmaLinux:8 | mod_proxy_html | 1:2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | mod_proxy_html | 1:2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | mod_session | 2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | mod_session | 2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| AlmaLinux:8 | mod_ssl | 1:2.4.37-47.module_el8.6.0+2935+fb177b09.2 | ALSA-2022:1915 |
| AlmaLinux:8 | mod_ssl | 1:2.4.37-47.module_el8.6.0+2872+fe0ff7aa.1.alma | ALSA-2022:1915 |
| Alpine:v3.20 | apache2 | 2.4.49-r0 | ALPINE-CVE-2021-36160 |
| Alpine:v3.21 | apache2 | 2.4.49-r0 | ALPINE-CVE-2021-36160 |
| Alpine:v3.22 | apache2 | 2.4.49-r0 | ALPINE-CVE-2021-36160 |
| Alpine:v3.23 | apache2 | 2.4.49-r0 | ALPINE-CVE-2021-36160 |
| Alpine:v3.24 | apache2 | 2.4.49-r0 | ALPINE-CVE-2021-36160 |
| Debian:12 | apache2 | 2.4.49-1 | DEBIAN-CVE-2021-36160 |
| Debian:13 | apache2 | 2.4.49-1 | DEBIAN-CVE-2021-36160 |
| Debian:14 | apache2 | 2.4.49-1 | DEBIAN-CVE-2021-36160 |
| Debian:12 | uwsgi | no fix listed | DEBIAN-CVE-2021-36160 |
| Debian:13 | uwsgi | no fix listed | DEBIAN-CVE-2021-36160 |
| Debian:14 | uwsgi | no fix listed | DEBIAN-CVE-2021-36160 |
| Rocky Linux:8 | httpd | 0:2.4.37-47.module+el8.6.0+823+f143cee1.1 | RLSA-2022:1915 |
| Rocky Linux:8 | mod_http2 | 0:1.15.7-5.module+el8.6.0+823+f143cee1 | RLSA-2022:1915 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.5.0+695+1fa8055e | RLSA-2022:1915 |
| Rocky Linux:8 | mod_md | 1:2.0.8-8.module+el8.4.0+553+7a69454b | RLSA-2022:1915 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache HTTP Server | Apache HTTP Server 2.4 – through 2.4.48 |
Weakness: CWE-125
References
- http://httpd.apache.org/security/vulnerabilities_24.html x_refsource_MISC
- [httpd-cvs] 20210916 [httpd-site] branch main updated: Revert "Add descriptions for CVE-2021-33193 CVE-2021-36160" mailing-list, x_refsource_MLIST
- [httpd-cvs] 20210916 [httpd-site] branch main updated: Add descriptions for CVE-2021-33193 CVE-2021-36160 mailing-list, x_refsource_MLIST
- FEDORA-2021-dce7e7738e vendor-advisory, x_refsource_FEDORA
- [httpd-users] 20210923 [users@httpd] 2.4.49 security fixes: more info mailing-list, x_refsource_MLIST
- [httpd-users] 20210923 Re: [users@httpd] 2.4.49 security fixes: more info mailing-list, x_refsource_MLIST
- [httpd-users] 20210923 [users@httpd] Re: [External] : [users@httpd] 2.4.49 security fixes: more info mailing-list, x_refsource_MLIST
- [httpd-users] 20210923 Re: [users@httpd] Re: [External] : [users@httpd] 2.4.49 security fixes: more info mailing-list, x_refsource_MLIST
- FEDORA-2021-e3f6dd670d vendor-advisory, x_refsource_FEDORA
- [debian-lts-announce] 20210929 [SECURITY] [DLA 2768-1] uwsgi security update mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211005 [Bug 65616] New: CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211005 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211006 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211008 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211009 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- DSA-4982 vendor-advisory, x_refsource_DEBIAN
- [httpd-bugs] 20211011 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [httpd-bugs] 20211012 [Bug 65616] CVE-2021-36160 regression mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20211020 [SECURITY] [DLA 2768-2] uwsgi regression update mailing-list, x_refsource_MLIST
- 20211124 Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products: November 2021 vendor-advisory, x_refsource_CISCO
- https://www.oracle.com/security-alerts/cpujan2022.html x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20211008-0004/ x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
- GLSA-202208-20 vendor-advisory, x_refsource_GENTOO