CVE DATABASE / CVE-2019-0211
CVE-2019-0211
Apache HTTP Server Privilege Escalation Vulnerability
Confirmed exploited in the wild. Added 2021-11-03.
Federal remediation due 2022-05-03.
Required action: Apply updates per vendor instructions.
Summary
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.
CVSS 3.1 breakdown
| Base score | 7.8 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
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References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.html
- http://packetstormsecurity.com/files/152386/Apache-2.4.38-Root-Privilege-Escalation.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
- http://www.openwall.com/lists/oss-security/2019/04/02/3
- http://www.openwall.com/lists/oss-security/2019/07/26/7
- http://www.securityfocus.com/bid/107666
- https://access.redhat.com/errata/RHBA-2019:0959
- https://access.redhat.com/errata/RHSA-2019:0746
- https://access.redhat.com/errata/RHSA-2019:0980
- https://access.redhat.com/errata/RHSA-2019:1296
- https://access.redhat.com/errata/RHSA-2019:1297
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-27. Always verify against the vendor advisory before acting.