CVE-2016-6816、CVE-2016-8735、CVE-2016-8745、CVE-2017-5647

Tomcat 升级

版本信息

• 当前环境中用的是 6.0.47

发现漏洞

• Apache Tomcat 安全限制绕过漏洞(CVE-2016-8735)
• Apache Tomcat 安全漏洞（CVE-2017-5647）
• Apache Tomcat信息泄露漏洞(CVE-2016-8745)
• Apache Tomcat 安全限制绕过漏洞(CVE-2016-6816)

漏洞信息

CVE-2017-5647

CVE-2017-5647 Apache Tomcat Information Disclosure
Severity: Important
Vendor: The Apache Software Foundation
Versions Affected:
Apache Tomcat 9.0.0.M1 to 9.0.0.M18
Apache Tomcat 8.5.0 to 8.5.12
Apache Tomcat 8.0.0.RC1 to 8.0.42
Apache Tomcat 7.0.0 to 7.0.76
Apache Tomcat 6.0.0 to 6.0.52

Description
A bug in the handling of the pipelined requests when send file was used
resulted in the pipelined request being lost when send file processing
of the previous request completed. This could result in responses
appearing to be sent for the wrong request. For example, a user agent
that sent requests A, B and C could see the correct response for request
A, the response for request C for request B and no response for request C.

Mitigation:
Users of the affected versions should apply one of the following
mitigations:

• Switch to the BIO HTTP where available
• Disable send file
• Upgrade to Apache Tomcat 9.0.0.M19 or later
• Upgrade to Apache Tomcat 8.5.13 or later
• Upgrade to Apache Tomcat 8.0.43 or later
• Upgrade to Apache Tomcat 7.0.77 or later
• Upgrade to Apache Tomcat 6.0.53 or later

Credit:
This issue was identified by the Tomcat security team.

History:
2017-04-10 Original advisory

References:
[1] http://tomcat.apache.org/security-9.html
[2] http://tomcat.apache.org/security-8.html
[3] http://tomcat.apache.org/security-7.html
[4] http://tomcat.apache.org/security-6.html

CVE-2016-8735

该漏洞与之前Oracle发布的mxRemoteLifecycleListener反序列化漏洞（CVE-2016-3427）相关，是由于使用了JmxRemoteLifecycleListener的监听功能所导致。而在Oracle官方发布修复后，Tomcat未能及时修复更新而导致的远程代码执行。

该漏洞所造成的最根本原因是Tomcat在配置JMX做监控时使用了JmxRemoteLifecycleListener的方法。

漏洞影响版本：
ApacheTomcat 9.0.0.M1 到9.0.0.M11
ApacheTomcat 8.5.0 到8.5.6
ApacheTomcat 8.0.0.RC1 到8.0.38
ApacheTomcat 7.0.0 到7.0.72
ApacheTomcat 6.0.0 到6.0.47

漏洞利用条件：
外部需要开启JmxRemoteLifecycleListener监听的10001和10002端口，来实现远程代码执行。

CVE-2016-6816

Apache Tomcat CVE-2016-6816 Security Bypass Vulnerability

Bugtraq ID: 94461
Class: Input Validation Error
CVE: CVE-2016-6816
Remote: Yes
Local: No
Published: Nov 22 2016 12:00AM
Updated: May 23 2017 04:27PM
Credit: Regis Leroy from Makina Corpus.
Vulnerable: Redhat Enterprise Linux Workstation Optional 7
Redhat Enterprise Linux Workstation Optional 6
Redhat Enterprise Linux Workstation 7
Redhat Enterprise Linux Workstation 6
Redhat Enterprise Linux Server Optional 7
Redhat Enterprise Linux Server Optional 6
Redhat Enterprise Linux Server 7
Redhat Enterprise Linux Server 6
Redhat Enterprise Linux HPC Node Optional 6
Redhat Enterprise Linux Desktop Optional 6
Redhat Enterprise Linux ComputeNode Optional 7
Redhat Enterprise Linux ComputeNode 7
Redhat Enterprise Linux Client Optional 7
Redhat Enterprise Linux 7 Client
Oracle Solaris 11.3
Oracle Solaris 10
Oracle Secure Global Desktop 5.3
Oracle Secure Global Desktop 5.2
Oracle Secure Global Desktop 4.71
Oracle Enterprise Linux 7
CentOS CentOS 7
Apache Tomcat 8.5.5
Apache Tomcat 8.5.4
Apache Tomcat 8.0.38
Apache Tomcat 8.0.37
Apache Tomcat 8.0.36
Apache Tomcat 8.0.35
Apache Tomcat 8.0.34
Apache Tomcat 8.0.33
Apache Tomcat 8.0.30
Apache Tomcat 8.0.27
Apache Tomcat 8.0.17
Apache Tomcat 8.0.15
Apache Tomcat 8.0.9
Apache Tomcat 8.0.8
Apache Tomcat 8.0.5
Apache Tomcat 8.0.3
Apache Tomcat 8.0.1
Apache Tomcat 7.0.72
Apache Tomcat 7.0.70
Apache Tomcat 7.0.69
Apache Tomcat 7.0.67
Apache Tomcat 7.0.65
Apache Tomcat 7.0.59
Apache Tomcat 7.0.57
Apache Tomcat 7.0.54
Apache Tomcat 7.0.53
Apache Tomcat 7.0.50
Apache Tomcat 7.0.33
Apache Tomcat 7.0.32
Apache Tomcat 7.0.31
Apache Tomcat 7.0.30
Apache Tomcat 7.0.29
Apache Tomcat 7.0.28
Apache Tomcat 7.0.27
Apache Tomcat 7.0.26
Apache Tomcat 7.0.25
Apache Tomcat 7.0.24
Apache Tomcat 7.0.23
Apache Tomcat 7.0.16
Apache Tomcat 7.0.15
Apache Tomcat 7.0.14
Apache Tomcat 7.0.13
Apache Tomcat 7.0.12
Apache Tomcat 7.0.9
Apache Tomcat 7.0.8
Apache Tomcat 7.0.7
Apache Tomcat 7.0.6
Apache Tomcat 7.0.4
Apache Tomcat 7.0.3
Apache Tomcat 7.0.2
Apache Tomcat 7.0.1
Apache Tomcat 7.0
Apache Tomcat 6.0.47
Apache Tomcat 6.0.44
Apache Tomcat 6.0.43
Apache Tomcat 6.0.41
Apache Tomcat 6.0.37
Apache Tomcat 6.0.36
Apache Tomcat 6.0.35
Apache Tomcat 6.0.28
Apache Tomcat 6.0.27
Apache Tomcat 6.0.26
Apache Tomcat 6.0.25
Apache Tomcat 6.0.24
Apache Tomcat 6.0.20
Apache Tomcat 6.0.18
Apache Tomcat 6.0.17
Apache Tomcat 6.0.16
Apache Tomcat 6.0.15
Apache Tomcat 6.0.14
Apache Tomcat 6.0.13
Apache Tomcat 6.0.12
Apache Tomcat 6.0.11
Apache Tomcat 6.0.10
Apache Tomcat 6.0.9
Apache Tomcat 6.0.8
Apache Tomcat 6.0.7
Apache Tomcat 6.0.6
Apache Tomcat 6.0.5
Apache Tomcat 6.0.4
Apache Tomcat 6.0.3
Apache Tomcat 6.0.2
Apache Tomcat 6.0.1
Apache Tomcat 6.0
Apache Tomcat 9.0.0M8
Apache Tomcat 9.0.0M6
Apache Tomcat 9.0.0.M9
Apache Tomcat 9.0.0.M5
Apache Tomcat 9.0.0.M4
Apache Tomcat 9.0.0.M3
Apache Tomcat 9.0.0.M2
Apache Tomcat 9.0.0.M11
Apache Tomcat 9.0.0.M10
Apache Tomcat 9.0.0.M1
Apache Tomcat 8.5.3
Apache Tomcat 8.5.2
Apache Tomcat 8.5.0
Apache Tomcat 8.0.32
Apache Tomcat 8.0.0.RC1
Apache Tomcat 8.0.0-RC6
Apache Tomcat 8.0.0-RC5
Apache Tomcat 8.0.0-RC3
Apache Tomcat 8.0.0-RC10
Apache Tomcat 8.0.0 Rc1
Apache Tomcat 7.0.68
Apache Tomcat 7.0.55
Apache Tomcat 7.0.5
Apache Tomcat 7.0.49
Apache Tomcat 7.0.48
Apache Tomcat 7.0.47
Apache Tomcat 7.0.46
Apache Tomcat 7.0.45
Apache Tomcat 7.0.44
Apache Tomcat 7.0.43
Apache Tomcat 7.0.42
Apache Tomcat 7.0.41
Apache Tomcat 7.0.40
Apache Tomcat 7.0.39
Apache Tomcat 7.0.38
Apache Tomcat 7.0.37
Apache Tomcat 7.0.36
Apache Tomcat 7.0.35
Apache Tomcat 7.0.34
Apache Tomcat 7.0.22
Apache Tomcat 7.0.21
Apache Tomcat 7.0.20
Apache Tomcat 7.0.19
Apache Tomcat 7.0.18
Apache Tomcat 7.0.11
Apache Tomcat 7.0.10
Apache Tomcat 6.0.45
Apache Tomcat 6.0.42
Apache Tomcat 6.0.39
Apache Tomcat 6.0.33
Apache Tomcat 6.0.32
Apache Tomcat 6.0.31
Apache Tomcat 6.0.30
Apache Tomcat 6.0.29
Apache Tomcat 6.0.19
Not Vulnerable: Apache Tomcat 8.5.8
Apache Tomcat 8.0.39
Apache Tomcat 7.0.73
Apache Tomcat 6.0.48
Apache Tomcat 9.0.0.M13

CVE-2016-8745

Description
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.

解决办法

• 根据漏洞描述及V8.5.37版本信息，将其升级至8.5.37即可

Apache Tomcat Versions

• tomcat各版本信息对照。在升级时注意jdk及其他组件版本信息。
• 详见 ： http://tomcat.apache.org/whichversion.html