CVE-2018-11763
Exploitation likely. EPSS gives it a 51% chance of exploitation in the next 30 days. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
51% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
- Attention now
Rising.
Lifecycle
23 events over 2920 days, from the signal feeds we watch.
- EPSS band changemoderate → highepss band change
- EPSS band changehigh → moderateepss band change
- EPSS band changemoderate → highepss band change
- EPSS band changehigh → moderateepss band change
- EPSS band changemoderate → highepss band change
- EPSS band changehigh → moderate
Affected products
- enterprise manager ops centerDatabases / db-tooling
- hospitality guest accessEnterprise Software
- Instantis EnterpriseTrackEnterprise Software / itsm-monitoring
- retail xstore point of serviceDatabases / cache-message-queue
- secure global desktopDatabases / db-tooling
- Oracle Secure Global DesktopSecurity Products / secure-gateway-vpn
And 8 more affected products. See all after sign-in
Technical detail
CVSS 3.0 vector
Open in the CVSS calculatorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Scored 5.9 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity NoneNo integrity impact
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html
- securityfocus.com/bid/105414
And 40 more references. See all after sign-in
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for Oracle, not every advisory.
A free account adds
- The full version matrix and every affected product
- Exploit links, proofs of concept and Metasploit modules
- Email alerts for the products you watch
- The same data over REST API, MCP and CLI