Path Traversal in Apache Tomcat Jk Connector
CVE-2018-1323
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.464 (98.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.464 · newest: 0.464 · change: 0.000
Affected products
- Apache Tomcat Jk Connector
- Apache Software Foundation Tomcat Connectors — versions Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/103389 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2018:1843 (vendor-advisory, Third Party Advisory)
- lists.apache.org/thread.html/6e146bce83578bd870893250ba8354e28f9d8e86c674c30dbe…
- lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8… (mailing-list)
- lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e06… (mailing-list)
- lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1… (mailing-list)
- lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e85… (mailing-list)
- lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c6… (mailing-list)
- lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c… (mailing-list)
Frequently asked questions
- What is CVE-2018-1323?
- CVE-2018-1323 is a high-severity vulnerability in Apache Tomcat Jk Connector, classified under Path Traversal. CVSS score: 7.5/10. Published 2018-03-12.
- How severe is CVE-2018-1323?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-1323 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.