• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

China-linked group Houken hit French organizations using zero-days

 | 

Cybercriminals Target Brazil: 248,725 Exposed in CIEE One Data Breach

 | 

Europol shuts down Archetyp Market, longest-running dark web drug marketplace

 | 

Kelly Benefits data breach has impacted 550,000 people, and the situation continues to worsen as the investigation progresses

 | 

Cisco removed the backdoor account from its Unified Communications Manager

 | 

U.S. Sanctions Russia's Aeza Group for aiding crooks with bulletproof hosting

 | 

Qantas confirms customer data breach amid Scattered Spider attacks

 | 

CVE-2025-6554 is the fourth Chrome zero-day patched by Google in 2025

 | 

U.S. CISA adds TeleMessage TM SGNL flaws to its Known Exploited Vulnerabilities catalog

 | 

A sophisticated cyberattack hit the International Criminal Court

 | 

Esse Health data breach impacted 263,000 individuals

 | 

Europol dismantles €460M crypto scam targeting 5,000 victims worldwide

 | 

CISA and U.S. Agencies warn of ongoing Iranian cyber threats to critical infrastructure

 | 

U.S. CISA adds Citrix NetScaler flaw to its Known Exploited Vulnerabilities catalog

 | 

Canada bans Hikvision over national security concerns

 | 

Denmark moves to protect personal identity from deepfakes with new copyright law

 | 

Ahold Delhaize data breach affected over 2.2 Million individuals

 | 

Facebook wants access to your camera roll for AI photo edits

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 51

 | 

Security Affairs newsletter Round 530 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • PoC exploit code for Apache Solr RCE flaw is available online

PoC exploit code for Apache Solr RCE flaw is available online

Pierluigi Paganini November 25, 2019

Over the summer, the Apache Solr team addressed a remote code execution flaw, not a working exploit code was published online.

The bug addressed by the Apache Solr team fixed over the summer is more dangerous than initially thought.

Apache Solr is a highly reliable, scalable and fault-tolerant, open-source search engine written in Java.

Solr is highly reliable, scalable and fault-tolerant, providing distributed indexing, replication and load-balanced querying, automated failover and recovery, centralized configuration and more.

The vulnerability was reported to maintainers by a user named “jnyryan” and resides in the default solr.in.sh configuration. jnyryan The vulnerability was reported to maintainers by a user named “jnyryan” and resides in the default solr.in.sh configuration.

“This issue originally had the title “default solr.in.sh contains uncommented lines” and told users to check their solr.in.sh file.” reads the security advisory. “Later we upgraded the severity of this due to risk of remote code execution, acquired a CVE number and issued the public annoucement quoted below.”

The issue affects 8.1.1 and 8.2.0 releases of Apache Solr for Linux (Windows is not affected) that contain an insecure setting for the ENABLE_REMOTE_JMX_OPTS configuration option in the default solr.in.sh configuration file.

“If you use the default solr.in.sh file from the affected releases, then JMX monitoring will be enabled and exposed on RMI_PORT (default=18983), without any authentication.” continues the advisory” If this port is opened for inbound traffic in your firewall, then anyone with network access to your Solr nodes will be able to access JMX, which may in turn allow them to upload malicious code for execution on the Solr server.”

According to an analysis published by Tenable, all Solr versions from v7.7.2 to v8.3 are affected by the flaw.

“Tenable Research has confirmed that Apache Solr versions 7.7.2 through 8.3 (the most current release) are vulnerable, and we suspect older versions that include the Config API are potentially vulnerable.” reads the analysis published by Tenable.

When the flaw was reported, the Apache Solr team acknowledged it but did not recognize its severity because the experts thought it could be exploited by an attacker to only access Solr monitoring data.

On October 30, the user “s00py” published a proof-of-concept exploit code on GitHub that leverage the issue to get remote code execution of vulnerable systems. The exploit code used the exposed 8983 port to enable support for Apache Velocity templates then used it to upload and run malicious code.

According to ZDNet, two days later the user “jas502n” published a second PoC code that allows to exploit the flaw very simply.

The availability of the two PoC exploits forced the Solr team to publish an updated security advisory on November 15. The vulnerability received the CVE-2019-12409 identifier.

“Make sure your effective solr.in.sh file has ENABLE_REMOTE_JMX_OPTS set to ‘false’ on every Solr node and then restart Solr. Note that the effective solr.in.sh file may reside in /etc/defaults/ or another location depending on the install.” reads the updated advisory. “You can then validate that the ‘com.sun.management.jmxremote*’ family of properties are not listed in the “Java Properties” section of the Solr Admin UI, or configured in a secure way.”

Apache solr rce-web

Experts also recommend blocking inbound traffic on JMX_PORT.

At the time of writing, experts are not aware of attacks exploiting the issue in the wild, but they pointed out that it is only a matter of time.

[adrotate banner=”9″] [adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – Apache Solr, hacking)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

Apache Solr Hacking information security news Pierluigi Paganini RCE Security Affairs Security News

you might also like

Pierluigi Paganini July 03, 2025
China-linked group Houken hit French organizations using zero-days
Read more
Pierluigi Paganini July 03, 2025
Cybercriminals Target Brazil: 248,725 Exposed in CIEE One Data Breach
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    China-linked group Houken hit French organizations using zero-days

    APT / July 03, 2025

    Cybercriminals Target Brazil: 248,725 Exposed in CIEE One Data Breach

    Data Breach / July 03, 2025

    Europol shuts down Archetyp Market, longest-running dark web drug marketplace

    Cyber Crime / July 03, 2025

    Kelly Benefits data breach has impacted 550,000 people, and the situation continues to worsen as the investigation progresses

    Uncategorized / July 03, 2025

    Cisco removed the backdoor account from its Unified Communications Manager

    Security / July 02, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT