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cve[email protected]CVE-2016-8745
HistoryAug 10, 2017 - 10:29 p.m.

CVE-2016-8745

2017-08-1022:29:00
CWE-388
web.nvd.nist.gov
178
4
apache
tomcat
nio
http connector
bug
cve-2016-8745
security vulnerability
information leakage

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

79.4%

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.

Affected configurations

Vulners
NVD
Node
apachetomcatRange9.0.0.M19.0.0.M13
OR
apachetomcatRange8.5.08.5.8
OR
apachetomcatRange8.0.0.RC18.0.39
OR
apachetomcatRange7.0.07.0.73
OR
apachetomcatRange6.0.166.0.48

CNA Affected

[
  {
    "product": "Apache Tomcat",
    "vendor": "Apache Software Foundation",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0.M1 to 9.0.0.M13"
      },
      {
        "status": "affected",
        "version": "8.5.0 to 8.5.8"
      },
      {
        "status": "affected",
        "version": "8.0.0.RC1 to 8.0.39"
      },
      {
        "status": "affected",
        "version": "7.0.0 to 7.0.73"
      },
      {
        "status": "affected",
        "version": "6.0.16 to 6.0.48"
      }
    ]
  }
]

References

Social References

More

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

79.4%