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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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.
Source: MITRE View Analysis Description
Source: MITRE
Base Score: 7.5 HIGH Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (V3.0 legend) Impact Score: 3.6 Exploitability Score: 3.9
Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None Scope (S): Unchanged Confidentiality (C): High Integrity (I): None Availability (A): None
Base Score: 5.0 MEDIUM Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend) Impact Subscore: 2.9 Exploitability Subscore: 10.0
Access Vector (AV): Network Access Complexity (AC): Low Authentication (AU): None Confidentiality (C): Partial Integrity (I): None Availability (A): None Additional Information: Allows unauthorized disclosure of information
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Vulnerability Type (View All)
https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb@%3Cdev.tomcat.apache.org%3E [No Types Assigned]
https://security.netapp.com/advisory/ntap-20180607-0002/ [No Types Assigned]
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html [No Types Assigned]
http://rhn.redhat.com/errata/RHSA-2017-0457.html [No Types Assigned]
http://rhn.redhat.com/errata/RHSA-2017-0527.html [No Types Assigned]
https://access.redhat.com/errata/RHSA-2017:0455 [No Types Assigned]
https://access.redhat.com/errata/RHSA-2017:0456 [No Types Assigned]
https://access.redhat.com/errata/RHSA-2017:0935 [No Types Assigned]
http://www.debian.org/security/2017/dsa-3754 [No Types Assigned]
http://www.debian.org/security/2017/dsa-3755 [No Types Assigned]
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned]
OR *cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:* *cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-388
http://www.securityfocus.com/bid/94828 No Types Assigned
http://www.securityfocus.com/bid/94828 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037432 No Types Assigned
http://www.securitytracker.com/id/1037432 Third Party Advisory, VDB Entry
https://lists.apache.org/thread.html/4113c05d37f37c12b8033205684f04033c5f7a9bae117d4af23b32b4@%3Cannounce.tomcat.apache.org%3E No Types Assigned
https://lists.apache.org/thread.html/4113c05d37f37c12b8033205684f04033c5f7a9bae117d4af23b32b4@%3Cannounce.tomcat.apache.org%3E Vendor Advisory
https://security.gentoo.org/glsa/201705-09 No Types Assigned
https://security.gentoo.org/glsa/201705-09 Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/94828 [No Types Assigned]
http://www.securitytracker.com/id/1037432 [No Types Assigned]
https://security.gentoo.org/glsa/201705-09 [No Types Assigned]