Path Normalization Issue in Apache Tomcat JK ISAPI Connector on IIS
CVE-2018-1323

7.5HIGH

Key Information:

Vendor
Apache
Status
Apache Tomcat Connectors
Vendor
CVE Published:
12 March 2018

Summary

The Apache Tomcat JK ISAPI Connector versions 1.2.0 to 1.2.42 contains a flaw in its path normalization process. This issue arises when handling specific edge cases in the requested path format before it matches against the URI-worker map. If a Tomcat instance exposes a limited set of URLs through an IIS endpoint, an attacker could potentially craft a malicious request. This request might leverage the reverse proxy mechanism, thereby exposing sensitive application functionality that should remain restricted, thus posing a risk to the overall security posture of affected deployments.

Affected Version(s)

Apache Tomcat Connectors Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42

References

http://www.securityfocus.com/bid/103389
vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2018:1843
vendor-advisoryx_refsource_REDHAT
https://lists.apache.org/thread.html/6e146bce83578bd87089...
x_refsource_MISC

EPSS Score

12% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.