CVE-2018-15756
DoS Attack via Range Requests
Exploitation likely. EPSS gives it a 9.2% 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
Spring Framework, version 5.1, versions 5.0.x prior to 5.0.10, versions 4.3.x prior to 4.3.20, and older unsupported versions on the 4.2.x branch provide support for range requests when serving static resources through the ResourceHttpRequestHandler, or starting in 5.0 when an annotated controller returns an org.springframework.core.io.Resource. A malicious user (or attacker) can add a range header with a high number of ranges, or with wide ranges that overlap, or both, for a denial of service attack. This vulnerability affects applications that depend on either spring-webmvc or spring-webflux. Such applications must also have a registration for serving static resources (e.g. JS, CSS, images, and others), or have an annotated controller that returns an org.springframework.core.io.Resource. Spring Boot applications that depend on spring-boot-starter-web or spring-boot-starter-webflux are ready to serve static resources out of the box and are therefore vulnerable.
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
9.2% chance of exploitation activity in the next 30 days, which ranks it in the 95th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
9 events over 2868 days, from the signal feeds we watch.
- Patch availablerecord updated
- OpenVAS check added
- EPSS band changemoderate → low
- Nuclei check added
- Patch availablerecord updated
- Publishedweakness classified
Affected products
- agile product lifecycle managementEnterprise Software / erp
- communications brm - elastic charging engineCommunications / messaging-chat
- communications converged application server - service controllerCommunications
- Communications Diameter Signaling RouterDatabases / cache-message-queue
- communications element managerCommunications
- Communications Online Mediation ControllerCommunications / voip-telephony
- communications session report managerCommunications
- communications session route managerCommunications / messaging-chat
And 67 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Scored 7.5 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- 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
- securityfocus.com/bid/105703
- lists.apache.org/thread.html/339fd112517e4873695b5115b96acdddbfc8f83b10598528d37c7d12%40%3Cissues.activemq.apache.org%3E
- lists.apache.org/thread.html/77886fec378ee6064debb1efb6b464a4a0173b2ff0d151ed86d3a228%40%3Cissues.activemq.apache.org%3E
And 37 more references. See all after sign-in
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