Use After Free in Apache HTTP Server
CVE-2019-0211
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 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.
EPSS exploit prediction
EPSS: 0.650 (99.2th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.650 · newest: 0.650 · change: 0.000
Affected products
- Apache HTTP Server — versions 2.4.17 to 2.4.38
- Apache HTTP Server
- NetApp Oncommand Unified Manager
- Oracle Communications Session Report Manager — versions 8.0.0, 8.1.0, 8.1.1
- Oracle Communications Session Route Manager — versions 8.0.0, 8.1.0, 8.1.1
- Oracle Enterprise Manager Ops Center — versions 12.3.3, 12.4.0
- Oracle HTTP Server — versions 12.2.1.3.0
- Oracle Instantis Enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Retail Xstore Point Of Service — versions 7.0, 7.1
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2019/04/02/3 (mailing-list, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/107666 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- seclists.org/bugtraq/2019/Apr/5 (mailing-list, Mailing List, Third Party Advisory)
- www.synology.com/security/advisory/Synology_SA_19_14 (Third Party Advisory)
- packetstormsecurity.com/files/152386/Apache-2.4.38-Root-Privilege-Escalation.ht… (VDB Entry, Third Party Advisory)
- usn.ubuntu.com/3937-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
- www.debian.org/security/2019/dsa-4422 (vendor-advisory, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/b1613d44ec364c87bb7ee8c5939949f9b061c05c06e0e90098… (mailing-list, Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Release Notes)
Frequently asked questions
- What is CVE-2019-0211?
- CVE-2019-0211 is a high-severity vulnerability in Apache HTTP Server, classified under Use After Free. CVSS score: 7.8/10. Published 2019-04-08.
- How severe is CVE-2019-0211?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-0211 known to be exploited?
- Yes. CVE-2019-0211 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 57 public proof-of-concept repositories are indexed.