CVE-2021-43980 Apache Tomcat: Information disclosure

2022-09-2800:00:00

CWE-362

apache

www.cve.org

5.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

58.6%

JSON

The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.

CNA Affected

[
  {
    "vendor": "Apache Software Foundation",
    "product": "Apache Tomcat",
    "versions": [
      {
        "version": "10.1.0-M1 to 10.1.0-M12",
        "status": "affected"
      },
      {
        "version": "10.0.0-M1 to 10.0.18",
        "status": "affected"
      },
      {
        "version": "9.0.0-M1 to 9.0.60",
        "status": "affected"
      },
      {
        "version": "8.5.0 to 8.5.77",
        "status": "affected"
      }
    ]
  }
]