Apache Tomcat Incomplete Cleanup Info Leak (11.x.x, 10.x.x, 9.x.x, 8.5.x)
CVE-2023-42795 Published on October 10, 2023

Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests
Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2023-42795 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an Insufficient Cleanup Vulnerability?

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

CVE-2023-42795 has been classified to as an Insufficient Cleanup vulnerability or weakness.


Products Associated with CVE-2023-42795

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-42795 are published in these products:

Apache Tomcat
 
Debian Linux
 
Oracle
 
Canonical Ubuntu Linux
 
Apache Accumulo
 

Affected Versions

Apache Software Foundation Apache Tomcat: apache accumulo:

Exploit Probability

EPSS
0.69%
Percentile
71.54%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.