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Fencer Vulns
high 7.5

CVE-2018-1323 in the critical feed json

The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it t…

published 2018-03-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11916

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
46.4%
EPSS 46.4% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to the URI-worker map did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via IIS, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing Tomcat via the reverse proxy.

Patch / fix

  • apache2-mod_jk openSUSE Tumbleweed 1.2.48-2.9

opensuse advisories openSUSE-SU-2024:10625-1

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-2018-1323 updated cvss 7.5

isapi_redirect: Mishandled HTTP request paths in jk_isapi_plugin.c can lead to unintended exposure of application resources via the reverse proxy

  • Red Hat JBoss Core Services isapi_redirect isapi_redirect Red Hat JBoss Enterprise Application Platform 6 web
    affected: no fix available
  • Red Hat JBoss Enterprise Web Server 2 web
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2018:1843

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

Exploit prediction

46.40% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Apache Software Foundation Apache Tomcat Connectors

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.