Description
In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Non-Unix systems are not affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache | Apache HTTP Server | 2.4.17 to 2.4.38 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apache2 | 2.4.38-3 | — |
| Debian 13 | apache2 | 2.4.38-3 | — |
| Debian 12 | apache2 | 2.4.38-3 | — |
| Debian 9 | apache2 | 2.4.25-3+deb9u7 | DSA-4422-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | apache2 | 2.4.29-1ubuntu4.6 | USN-3937-1 |
| Ubuntu 16.04 LTS | apache2 | 2.4.18-2ubuntu3.10 | USN-3937-1 |
| Ubuntu 14.04 LTS | apache2 | 2.4.7-1ubuntu4.22 | USN-3937-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | httpd +7 | 2.4.37-11.module+el8.0.0+2969+90015743 | RHSA-2019:0980 |
| RHEL 8 | mod_http2 | 1.11.3-2.module+el8.0.0+2969+90015743 | RHSA-2019:0980 |
| RHEL 8 | mod_ssl +1 | 1:2.4.37-11.module+el8.0.0+2969+90015743 | RHSA-2019:0980 |
| RHEL 3 | httpd24-httpd +5 | 2.4.34-7.el6.1 | RHSA-2019:0746 |
| RHEL 3 | httpd24-mod_auth_mellon | 0.13.1-2.el7.1 | RHSA-2019:0746 |
| RHEL 3 | httpd24-mod_md | 2.4.34-7.el7.1 | RHSA-2019:0746 |
| RHEL 3 | httpd24-mod_ssl +1 | 1:2.4.34-7.el6.1 | RHSA-2019:0746 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat JBoss Core Services 1 | jbcs-httpd24-httpd +6 | 2.4.29-40.jbcs.el6 | RHSA-2019:1297 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.29-40.jbcs.el6 | RHSA-2019:1297 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-openssl +4 | 1:1.0.2n-15.jbcs.el6 | RHSA-2019:1297 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | apache2 | 2.4.33-3.15.1 | SUSE-SU-2019:0873-1 |
| SLES 12 SP4 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SLES 12 SP3 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SLES 12 SP2 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SLES for SAP 12 SP3 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SLES for SAP 12 SP2 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SUSE OpenStack Cloud 7 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
| SUSE Enterprise Storage 4 | apache2 | 2.4.23-29.40.1 | SUSE-SU-2019:0878-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.0 | apache2 | 2.4.33-lp150.2.17.1 | openSUSE-SU-2019:1209-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | apache2 | 2.4.39-r0 | — |
| Alpine v3.23 | apache2 | 2.4.39-r0 | — |
| Alpine v3.22 | apache2 | 2.4.39-r0 | — |
| Alpine v3.21 | apache2 | 2.4.39-r0 | — |
| Alpine v3.20 | apache2 | 2.4.39-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | apache2 | 2.4.39-r0 | — |
| Alpine v3.18 | apache2 | 2.4.39-r0 | — |
| Alpine v3.17 | apache2 | 2.4.39-r0 | — |
| Alpine v3.16 | apache2 | 2.4.39-r0 | — |
| Alpine v3.15 | apache2 | 2.4.39-r0 | — |
| Alpine v3.14 | apache2 | 2.4.39-r0 | — |
| Alpine v3.13 | apache2 | 2.4.39-r0 | — |
| Alpine v3.12 | apache2 | 2.4.39-r0 | — |
| Alpine v3.11 | apache2 | 2.4.39-r0 | — |
| Alpine v3.10 | apache2 | 2.4.39-r0 | — |
| Alpine v3.9 | apache2 | 2.4.39-r0 | — |
| Alpine v3.8 | apache2 | 2.4.39-r0 | — |
| Alpine v3.7 | apache2 | 2.4.39-r0 | — |
| Alpine v3.6 | apache2 | 2.4.39-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | httpd +7 | 2.4.39-1.amzn2.0.1 | ALAS2-2019-1189 |
| Amazon Linux 2 | mod_ssl +1 | 1:2.4.39-1.amzn2.0.1 | ALAS2-2019-1189 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | httpd +7 | 2.4.37-11.0.1.module+el8.0.0+5209+a98d70d6 | ELSA-2019-0980 |
| Oracle Linux 8 | mod_http2 | 1.11.3-2.module+el8.0.0+5209+a98d70d6 | ELSA-2019-0980 |
| Oracle Linux 8 | mod_ssl +1 | 1:2.4.37-11.0.1.module+el8.0.0+5209+a98d70d6 | ELSA-2019-0980 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Apache 2.4.17 < 2.4.38 - 'apache2ctl graceful' 'logrotate' Local Privilege Escalation EDB-46676 · local · Apr 8, 2019
GitHub 2 repositories
-
ozkanbilge/Apache-Exploit-2019 ★ 11 · May 12, 2019
CVE-2019-0211-apache & CVE-2019-6977-imagecolormatch
-
Jeanback1/CVE-2019-0211-exploit ★ 0 · May 31, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 11
- RHSA-2019:1297 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.29 SP2 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- RHSA-2019:0746 Red Hat Security Advisory: httpd24-httpd and httpd24-mod_auth_mellon security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2019:0980 Red Hat Security Advisory: httpd:2.4 security update Red Hat Security Advisories (RHSA) · Sep 21, 2026
- USN-3937-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4422-1 apache2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:0878-1 Security update for apache2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0873-1 Security update for apache2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1209-1 Security update for apache2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-2047 Apache HTTP Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 13, 2023
- ELSA-2019-0980 Important: httpd:2.4 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 30, 2019
- ALAS2-2019-1189 Important: httpd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · May 20, 2019
References
- [oss-security] 20190401 CVE-2019-0211: Apache HTTP Server privilege escalation from modules' scripts mailing-list
- 107666 vdb-entry
- 20190403 [SECURITY] [DSA 4422-1] apache2 security update mailing-list
- https://www.synology.com/security/advisory/Synology_SA_19_14
- http://packetstormsecurity.com/files/152386/Apache-2.4.38-Root-Privilege-Escalation.html
- USN-3937-1 vendor-advisory
- FEDORA-2019-cf7695b470 vendor-advisory
- DSA-4422 vendor-advisory
- [httpd-users] 20190406 [users@httpd] CVE-2019-0211/0215/0217 mailing-list
- FEDORA-2019-119b14075a vendor-advisory
- 20190407 [slackware-security] httpd (SSA:2019-096-01) mailing-list
- 46676 exploit
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://packetstormsecurity.com/files/152415/Slackware-Security-Advisory-httpd-Updates.html
- http://packetstormsecurity.com/files/152441/CARPE-DIEM-Apache-2.4.x-Local-Privilege-Escalation.html
- http://www.apache.org/dist/httpd/CHANGES_2.4.39
- [community-dev] 20190411 CVE-2019-0211 applicable to versions 2.2.x? mailing-list
- [community-dev] 20190411 Re: CVE-2019-0211 applicable to versions 2.2.x? mailing-list
- RHSA-2019:0746 vendor-advisory
- openSUSE-SU-2019:1190 vendor-advisory
- [community-dev] 20190411 RE: CVE-2019-0211 applicable to versions 2.2.x? mailing-list
- https://support.f5.com/csp/article/K32957101
- openSUSE-SU-2019:1209 vendor-advisory
- GLSA-201904-20 vendor-advisory
- https://security.netapp.com/advisory/ntap-20190423-0001/
- openSUSE-SU-2019:1258 vendor-advisory
- RHSA-2019:0980 vendor-advisory
- RHBA-2019:0959 vendor-advisory
- FEDORA-2019-a4ed7400f4 vendor-advisory
- RHSA-2019:1297 vendor-advisory
- RHSA-2019:1296 vendor-advisory
- [httpd-cvs] 20190611 svn commit: r1861068 - /httpd/site/trunk/content/security/vulnerabilities-httpd.xml mailing-list
- RHSA-2019:1543 vendor-advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- [oss-security] 20190726 Re: Statistics for distros lists updated for 2019Q2 mailing-list
- [httpd-cvs] 20190815 svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilit mailing-list
- [httpd-cvs] 20190815 svn commit: r1048742 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilit mailing-list
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03950en_us
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- [announce] 20200131 Apache Software Foundation Security Report: 2019 mailing-list
- [httpd-cvs] 20200401 svn commit: r1058586 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilit mailing-list
- [httpd-cvs] 20200401 svn commit: r1058587 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilit mailing-list
- https://www.oracle.com/security-alerts/cpuapr2020.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ mailing-list
- [httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/ mailing-list
- [httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.ht mailing-list
- [httpd-cvs] 20210330 svn commit: r1073139 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ mailing-list
- [httpd-cvs] 20210330 svn commit: r1888194 [12/13] - /httpd/site/trunk/content/security/json/ mailing-list
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ mailing-list
- [httpd-cvs] 20210330 svn commit: r1073149 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ mailing-list
- [httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabiliti mailing-list