CVE-2017-7674
MEDIUM severity · CVSS 4.3 · CWE-345
4.3CVSS MEDIUM
Summary
The CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache poisoning in some circumstances.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactNone
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)8%
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.debian.org/security/2017/dsa-3974
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- http://www.securityfocus.com/bid/100280Advisory
- https://access.redhat.com/errata/RHSA-2017:1801
- https://access.redhat.com/errata/RHSA-2017:1802
- https://access.redhat.com/errata/RHSA-2017:3081
- https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/22b4bb077502f847e2b9fcf00b96e81e734466ab459780ff73b60c0f%40%3Cannounce.tomcat.apache.org%3E