Resource exhaustion in Apache HTTP Server
CVE-2018-17189
In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.201 (97.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.201 · newest: 0.201 · change: 0.000
Affected products
- Apache HTTP Server — versions 2.4.17, 2.4.18, 2.4.20
- Apache Software Foundation HTTP Server — versions 2.4.17 to 2.4.37
- NetApp Santricity Cloud Connector
- NetApp Storage Automation Store
- Oracle Enterprise Manager Ops Center — versions 12.3.3
- Oracle Hospitality Guest Access — versions 4.2.0, 4.2.1
- Oracle Instantis Enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Retail Xstore Point Of Service — versions 7.0, 7.1
- Oracle Sun Zfs Storage Appliance Kit — versions 8.8.6
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- NeoOniX/5ATTACK
- SzeKiatTan/nlp-cve-vendor-classification
- SzeKiatTan/nlp-cve-vendor-classification-gpt2
- austin-lai/External-Penetration-Testing-Holo-Corporate-Network-TryHackMe-Holo-Network
- bioly230/THM_
- vshaliii/Basic-Pentesting-2-Vulnhub-Walkthrough
- vshaliii/DC-2-Vulnhub-Walkthrough
- vshaliii/DC-3-Vulnhub-Walkthrough
- vshaliii/Funbox2-rookie
References
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- www.securityfocus.com/bid/106685 (VDB Entry, Third Party Advisory, vdb-entry)
- security.netapp.com/advisory/ntap-20190125-0001/ (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/201903-21 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Apr/5 (mailing-list, Mailing List, Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/3937-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2019/dsa-4422 (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17189?
- CVE-2018-17189 is a medium-severity vulnerability in Apache HTTP Server, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2019-01-30.
- How severe is CVE-2018-17189?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2018-17189 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.