Apache Tomcat 6.0.16 < 6.0.50 / 7.0.x < 7.0.75 / 8.0.x < 8.0.41 / 8.5.x < 8.5.9 NIO HTTP Connector Information Disclosure

Medium Nessus Plugin ID 96003


The remote Apache Tomcat server is affected by an information disclosure vulnerability.


According to its self-reported version number, the Apache Tomcat service running on the remote host is 6.0.16 prior to 6.0.50, 7.0.x prior to 7.0.75, 8.0.x prior to 8.0.41, or 8.5.x prior to 8.5.9. It is therefore, affected by an information disclosure vulnerability in error handling during send file processing by the NIO HTTP connector, in which an error can cause the current Processor object to be added to the Processor cache multiple times. This allows the same Processor to be used for concurrent requests. An unauthenticated, remote attacker can exploit this issue, via a shared Processor, to disclose sensitive information, such as session IDs, response bodies related to another request, etc.

Note that Nessus has not attempted to exploit this issue but has instead relied only on the application's self-reported version number.


Upgrade to Apache Tomcat version 6.0.50 / 7.0.75 / 8.0.41 / 8.5.9 or later. For the 6.0.x version branch, the vulnerability was fixed in 6.0.49; however, that release candidate was not approved, and 6.0.50 is still pending release.

See Also





Plugin Details

Severity: Medium

ID: 96003

File Name: tomcat_8_5_9.nasl

Version: $Revision: 1.8 $

Type: remote

Family: Web Servers

Published: 2016/12/21

Modified: 2018/02/20

Dependencies: 39446

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:tomcat

Required KB Items: installed_sw/Apache Tomcat, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/12/08

Vulnerability Publication Date: 2016/11/24

Reference Information

CVE: CVE-2016-8745

BID: 94828

OSVDB: 148477