Vulnerability in Apache Tomcat
CVE-2017-5651
In Apache Tomcat 9.0.0.M1 to 9.0.0.M18 and 8.5.0 to 8.5.12, the refactoring of the HTTP connectors introduced a regression in the send file processing. If the send file processing completed quickly, it was possible for the Processor to be added to the processor cache twice. This could result in the same Processor being used for multiple requests which in turn could lead to unexpected errors and/or response mix-up.
EPSS: 0.078 (94.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Tomcat — versions 8.5.0, 8.5.1, 8.5.2
- Apache Software Foundation Tomcat — versions 8.5.0 to 8.5.12, 9.0.0.M1 to 9.0.0.M18
Public proof-of-concept exploits
References
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@apache.org (vendor-advisory, x_refsource_GENTOO)
- security@apache.org (x_refsource_CONFIRM)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (vdb-entry, x_refsource_SECTRACK)
- security@apache.org (x_refsource_CONFIRM)
- security@apache.org (x_refsource_CONFIRM, Patch, Issue Tracking)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2017-5651?
- CVE-2017-5651 is a critical-severity vulnerability in Apache Tomcat. CVSS score: 9.8/10. Published 2017-04-17.
- How severe is CVE-2017-5651?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-5651 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.