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 / 9.0.x < 9.0.0.M15 NIO HTTP Connector Information Disclosure

Medium Nessus Plugin ID 96003

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VPR Score: 3.6


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, 8.5.x prior to 8.5.9, or 9.0.x prior to 9.0.0.M15. 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 / 9.0.0.M15 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: 1.16

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 2016/12/21

Updated: 2020/03/11

Dependencies: 39446, 130175, 130590

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2016-8745

CVSS v2.0

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

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

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

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