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Fencer Vulns
medium 4.3

CVE-2017-7674 json

Insufficient Verification of Data Authenticity in Apache Tomcat

published 2017-08-11 9 y ago modified 2026-10-15 24 d ago also GHSA-73rx-3f9r-x949 , EUVD-2022-2904

cvss
4.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.0%
EPSS 8.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

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.

Patch / fix

  • maven org.apache.tomcat:tomcat 7.0.79, 8.0.45, 8.5.16, 9.0.0.M22
  • tomcat7 Ubuntu 14.04 LTS 7.0.52-1ubuntu0.13
  • tomcat8 Ubuntu 16.04 LTS 8.0.32-1ubuntu1.5

ubuntu advisories UBUNTU-CVE-2017-7674

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tomcat7 jboss enterprise web server 3.1 7.0.70-22.ep7.el6
  • tomcat7 jboss enterprise web server 3.1 7.0.70-22.ep7.el7
  • tomcat8 jboss enterprise web server 3.1 8.0.36-24.ep7.el6
  • tomcat8 jboss enterprise web server 3.1 8.0.36-24.ep7.el7
  • log4j-eap6 jboss enterprise web server 3.1 1.2.16-12.redhat_3.1.ep6.el6
  • log4j-eap6 jboss enterprise web server 3.1 1.2.16-12.redhat_3.1.ep6.el7
  • tomcat7-lib jboss enterprise web server 3.1 7.0.70-22.ep7.el6
  • tomcat7-lib jboss enterprise web server 3.1 7.0.70-22.ep7.el7

red hat advisories RHSA-2017:1801RHSA-2017:3081

  • tomcat SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 8.0.43-10.24.1
  • tomcat SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +2 more 8.0.43-29.5.1
  • tomcat SLES 12-LTSS 7.0.82-7.16.1

suse advisories SUSE-SU-2017:3279-1SUSE-SU-2017:3059-1SUSE-SU-2017:3039-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7674 updated cvss 5.9

tomcat: Vary header not added by CORS filter leading to cache poisoning

  • Red Hat JBoss Enterprise Web Server 2 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat7 tomcat7, +6 more
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Fuse 6 tomcat7 tomcat7, tomcat8 tomcat8
    under investigation
  • Red Hat Enterprise Linux Client (v. 7) tomcat 7.0.76-3.el7_4, tomcat-servlet-3.0-api 7.0.76-3.el7_4 Red Hat Enterprise Linux Client Optional (v. 7) tomcat 7.0.76-3.el7_4, tomcat-lib 7.0.76-3.el7_4, tomcat-jsvc 7.0.76-3.el7_4, tomcat-javadoc 7.0.76-3.el7_4, tomcat-webapps 7.0.76-3.el7_4, tomcat-el-2.2-api 7.0.76-3.el7_4, +3 more Red Hat Enterprise Linux ComputeNode (v. 7) tomcat 7.0.76-3.el7_4, tomcat-servlet-3.0-api 7.0.76-3.el7_4 Red Hat Enterprise Linux ComputeNode Optional (v. 7) tomcat 7.0.76-3.el7_4, tomcat-lib 7.0.76-3.el7_4, tomcat-jsvc 7.0.76-3.el7_4, tomcat-javadoc 7.0.76-3.el7_4, tomcat-webapps 7.0.76-3.el7_4, tomcat-el-2.2-api 7.0.76-3.el7_4, +3 more Red Hat Enterprise Linux Server (v. 7) tomcat 7.0.76-3.el7_4, tomcat-lib 7.0.76-3.el7_4, tomcat-webapps 7.0.76-3.el7_4, tomcat-el-2.2-api 7.0.76-3.el7_4, tomcat-jsp-2.2-api 7.0.76-3.el7_4, tomcat-admin-webapps 7.0.76-3.el7_4, +1 more Red Hat Enterprise Linux Server Optional (v. 7) tomcat 7.0.76-3.el7_4, tomcat-lib 7.0.76-3.el7_4, tomcat-jsvc 7.0.76-3.el7_4, tomcat-javadoc 7.0.76-3.el7_4, tomcat-webapps 7.0.76-3.el7_4, tomcat-el-2.2-api 7.0.76-3.el7_4, +3 more
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) tomcat 7.0.76-3.el7_4, tomcat-lib 7.0.76-3.el7_4, tomcat-webapps 7.0.76-3.el7_4, tomcat-el-2.2-api 7.0.76-3.el7_4, tomcat-jsp-2.2-api 7.0.76-3.el7_4, tomcat-admin-webapps 7.0.76-3.el7_4, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) tomcat-jsvc 7.0.76-3.el7_4, tomcat-javadoc 7.0.76-3.el7_4, tomcat-docs-webapp 7.0.76-3.el7_4
    fixed: vendor fix RHSA-2017:3081
  • Red Hat JBoss Web Server 3.1
    fixed: vendor fix RHSA-2017:1802
  • Red Hat JBoss Web Server 3.1 for RHEL 6 tomcat7 7.0.70-22.ep7.el6, tomcat8 8.0.36-24.ep7.el6, tomcat7-lib 7.0.70-22.ep7.el6, tomcat8-lib 8.0.36-24.ep7.el6, tomcat7-jsvc 7.0.70-22.ep7.el6, tomcat8-jsvc 8.0.36-24.ep7.el6, +20 more Red Hat JBoss Web Server 3.1 for RHEL 7 tomcat7 7.0.70-22.ep7.el7, tomcat8 8.0.36-24.ep7.el7, tomcat7-lib 7.0.70-22.ep7.el7, tomcat8-lib 8.0.36-24.ep7.el7, tomcat7-jsvc 7.0.70-22.ep7.el7, tomcat8-jsvc 8.0.36-24.ep7.el7, +20 more
    fixed: vendor fix RHSA-2017:1801
  • Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more Red Hat JBoss Data Grid 6 jbossweb jbossweb Red Hat JBoss Data Virtualization 6 jbossweb jbossweb Red Hat JBoss Enterprise Application Platform 6 jbossweb jbossweb Red Hat JBoss Fuse 6 jbossweb jbossweb Red Hat JBoss Fuse Service Works 6 jbossweb jbossweb
    +3 more products
    Red Hat JBoss Operations Network 3 jbossweb jbossweb Red Hat JBoss Portal 6 jbossweb jbossweb Red Hat Software Collections rh-java-common-tomcat-lib, rh-java-common-tomcat-javadoc, rh-java-common-tomcat-el-2.2-api, rh-java-common-tomcat-jsp-2.2-api, rh-java-common-tomcat-servlet-3.0-api
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
24 d ago

Exploit prediction

8.04% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat
>=9.0.0.M1, <9.0.0.M22
>=8.5.0, <8.5.16
>=8.0.0.RC1, <8.0.45
>=7.0.41, <7.0.79
9.0.0.M22
8.5.16
8.0.45
7.0.79

Affected products

  • Apache Software Foundation Apache Tomcat

Classification

Weakness
  • CWE-345 Insufficient Verification of Data Authenticity

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.