CVE-2023-42794

Description

Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged with Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased, in progress refactoring that exposed a potential denial of service on Windows if a web application opened a stream for an uploaded file but failed to close the stream. The file would never be deleted from disk creating the possibility of an eventual denial of service due to the disk being full. Other, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.33%• Percentile: 56%

Techniques & Countermeasures

• CWE-459•Incomplete Cleanup

  The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

Affected Systems

• apache software foundation•apache tomcat

  ≥ 9.0.70, ≤ 9.0.80 | ≥ 8.5.85, ≤ 8.5.93

• Unknown•Tomcat

  ≥ 8.5.85, < 8.5.94 | ≥ 9.0.70, < 9.0.81

• org.apache.tomcat•tomcat-coyote

  ≥ 9.0.70, < 9.0.81 | ≥ 8.5.85, < 8.5.94

References (4)

• https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82
• http://www.openwall.com/lists/oss-security/2023/10/10/8
• https://nvd.nist.gov/vuln/detail/CVE-2023-42794
• https://github.com/apache/tomcat