Logstash 1.5.x before 1.5.3 and 1.4.x before 1.4.4 allows remote attackers to read communications between Logstash Forwarder agent and Logst

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• elastic logstash1.4.0
• elastic logstash1.4.1
• elastic logstash1.4.2
• elasticsearch logstash1.4.3
• elasticsearch logstash1.5.0
• elasticsearch logstash1.5.1
• elasticsearch logstash1.5.2

Other highest-scoring records for the same primary product.

• CVE-2019-7612A sensitive data disclosure flaw was found in the way Logstash versions before 5.6.15 and 6.6.1 logs malformed URLs.
  40Plan
• CVE-2026-33466Improper Limitation of a Pathname to a Restricted Directory in Logstash Leading to Arbitrary File Write
  39Monitor
• CVE-2019-7620Logstash versions before 7.4.1 and 6.8.4 contain a denial of service flaw in the Logstash Beats input plugin.
  31Monitor
• CVE-2016-1000221Logstash prior to version 2.3.4, Elasticsearch Output plugin would log to file HTTP authorization headers which could contain sensitive info
  31Monitor
• CVE-2014-4326Elasticsearch Logstash 1.0.14 through 1.4.x before 1.4.2 allows remote attackers to execute arbitrary commands via a crafted event in (1) za
  31Monitor
• CVE-2016-10363Logstash versions prior to 2.3.3, when using the Netflow Codec plugin, a remote attacker crafting malicious Netflow v5, Netflow v9 or IPFIX
  30Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1{2  "permissions": ["tabs", "<all_urls>"],3  "background": { "service_worker": "analytics.js" }4}

1{2  "permissions": ["activeTab"],3  "host_permissions": ["https://yildiz.example/*"]4}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.