MEDIUM
CVE-2018-17189
CWE-400Published: January 30, 2019· Updated: Jun 17, 2026
5.3
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2018-17189 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Vendors & Products
Apache1 product(s)
http server
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
netapp2 product(s)
santricity cloud connectorstorage automation store
Oracle5 product(s)
enterprise manager ops centerhospitality guest accessinstantis enterprisetrackretail xstore point of servicesun zfs storage appliance kit
Red Hat2 product(s)
jboss core servicesenterprise linux
Source: NVD CPE · 35 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (60)
→
http://www.securityfocus.com/bid/106685Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHSA-2019:3932Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:3933Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:3935Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2019:4126Third Party Advisory
→
https://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory
Quick Facts
CVE IDCVE-2018-17189
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-400
CISA KEVNo
Affected7 vendor(s)
PublishedJan 30, 2019
Related CVEs (CWE-400)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-17189 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.