A bug in the error handling of the send file code for the NIO HTTP connector in Apache Tomcat 9.0.0.M1 to 9.0.0.M13, 8.5.0 to 8.5.8, 8.0.0.RC1 to 8.0.39, 7.0.0 to 7.0.73 and 6.0.16 to 6.0.48 resulted in the current Processor object being added to the Processor cache multiple times. This in turn meant that the same Processor could be used for concurrent requests. Sharing a Processor can result in information leakage between requests including, not not limited to, session ID and the response body. The bug was first noticed in 8.5.x onwards where it appears the refactoring of the Connector code for 8.5.x onwards made it more likely that the bug was observed. Initially it was thought that the 8.5.x refactoring introduced the bug but further investigation has shown that the bug is present in all currently supported Tomcat versions.
Published 2017-08-10 22:29:00
Updated 2023-12-08 16:41:19
View at NVD,   CVE.org

Threat overview for CVE-2016-8745

Top countries where our scanners detected CVE-2016-8745
Top open port discovered on systems with this issue 80
IPs affected by CVE-2016-8745 98,509
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2016-8745!
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Exploit prediction scoring system (EPSS) score for CVE-2016-8745

0.65%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-8745

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.9
3.6
NIST

CWE ids for CVE-2016-8745

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-8745

Products affected by CVE-2016-8745

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