CVE-2019-0211
HIGH severity · CVSS 7.8 · Use-after-free · actively exploited (CISA KEV)
7.8CVSS HIGH ● exploited
🔴 Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2021-11-03. US federal agencies must patch by 2022-05-03.
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)90%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (3)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.apache.org/dist/httpd/CHANGES_2.4.39Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00051.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00061.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00084.htmlAdvisory
- http://packetstormsecurity.com/files/152386/Apache-2.4.38-Root-Privilege-Escalation.htmlAdvisory
- http://www.openwall.com/lists/oss-security/2019/04/02/3Advisory
- http://packetstormsecurity.com/files/152415/Slackware-Security-Advisory-httpd-Updates.htmlAdvisory
- http://packetstormsecurity.com/files/152441/CARPE-DIEM-Apache-2.4.x-Local-Privilege-Escalation.htmlAdvisory