flashklion.blogg.se - Apache lucene cve

#APACHE LUCENE CVE UPDATE#
#APACHE LUCENE CVE CODE#
#APACHE LUCENE CVE TRIAL#

#APACHE LUCENE CVE TRIAL#

Get a free 30-day trial of Tenable.io Vulnerability Management. Learn more about Tenable, the first Cyber Exposure platform for holistic management of your modern attack surface. Join Tenable's Security Response Team on the Tenable Community. jas502n's Exploit Script for Apache Solr RCE (Velocity Template).

s00py’s GitHub Gist for Apache Solr RCE (Velocity Template).

According to the advisory, “Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is `trusted` (has been uploaded by an authenticated user).” Identifying affected systemsĪ list of Tenable plugins to identify this vulnerability will appear here as they’re released. However, following the release of 8.3.1, researcher Peter Cseh of Cloudera reported the fix as incomplete to the Apache Solr team, resulting in the hardening of VelocityResponseWriter as part of Solr version 8.4. On December 3, Apache released Solr version 8.3.1, which reportedly addressed CVE-2019-17558 as referenced in SOLR-13971. Days later, an exploit script was published to a GitHub repository. Proof of conceptĪs mentioned previously, a PoC was published on October 29 as a Github Gist. Once the core names have been identified, an attacker can send a specially crafted HTTP POST request to the Config API to toggle the params resource loader value for the Velocity Response Writer in the solrconfig.xml file to true.Įnabling this parameter would allow an attacker to use the velocity template parameter in a specially crafted Solr request, leading to RCE.ĭespite the recent release of Apache Solr 8.3 that addresses a default configuration flaw that was reported back in July, this flaw remained a zero-day until December 29.

AnalysisĪccording to the PoC, an attacker could target a vulnerable Apache Solr instance by first identifying a list of Solr core names. After the announcement from Apache was released, we can now confirm versions 5.0.0 to 8.3.1 are affected.

Tenable Research confirmed that Apache Solr versions 7.7.2 through 8.3 were vulnerable at the time this blog post was originally published. At the time this blog post was published, this vulnerability did not have a CVE identifier and no confirmation or indication of a solution available from Apache. However, Apache recently announced releases of Solr to address this vulnerability, which is now identified as CVE-2019-17558.

#APACHE LUCENE CVE CODE#

On October 29, a proof of concept (PoC) for a remote code execution (RCE) vulnerability in Apache Solr, a popular open-source search platform built on Apache Lucene, was published as a GitHub Gist.

#APACHE LUCENE CVE UPDATE#

UPDATE : The background and solution sections below have been updated to reflect the recent security update released by Apache. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing.Īn integer value that limits the result set of the search operation.Īn optional directory containing files to be used to be analyzed and added to the index at producer startup.Apache Solr remained vulnerable to a zero-day weeks after proof-of-concept code became public for CVE-2019-17558. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. Whether the producer should be started lazy (on the first message). This is enabled by default.Ī file system directory in which index files are created upon analysis of the document by the specified analyzer.Ĭ-start-producer Whether to enable auto configuration of the lucene component. The option is a .lucene.LuceneConfiguration type. This can be used for automatic configuring JDBC data sources, JMS connection factories, AWS Clients, etc. This is used for automatic autowiring options (the option must be marked as autowired) by looking up in the registry to find if there is a single instance of matching type, which then gets configured on the component. Lucene also offers a rich set of analyzers out of the box.

This can lead to brokers hitting OutOfMemoryException and causing denial of service. The vulnerability allows malicious unauthenticated clients to allocate large amounts of memory on brokers. The value for analyzer can be any class that extends the abstract class .Analyzer. A security vulnerability has been identified in Apache Kafka. It thus represents a policy for extracting index terms from text. An Analyzer builds TokenStreams, which analyze text.