Path Traversal in Apache Tomcat Jk Connector
CVE-2018-11759
The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44 did not handle some edge cases correctly. If only a sub-set of the URLs supported by Tomcat were exposed via httpd, then it was possible for a specially constructed request to expose application functionality through the reverse proxy that was not intended for clients accessing the application via the reverse proxy. It was also possible in some configurations for a specially constructed request to bypass the access controls configured in httpd. While there is some overlap between this issue and CVE-2018-1323, they are not identical.
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: 0.906 (99.8th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.838 · newest: 0.906 · change: +0.068
Affected products
- Apache Tomcat Jk Connector
- Apache Software Foundation Tomcat Connectors — versions Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44
- Debian Linux — versions 8.0, 9.0
- Red Hat Jboss Core Services
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2018/dsa-4357 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0367 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105888 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.apache.org/thread.html/6d564bb0ab73d6b3efdd1d6b1c075d1a2c84ecd84a4159d612…
- lists.debian.org/debian-lts-announce/2018/12/msg00007.html (mailing-list, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:0366 (vendor-advisory, Third Party Advisory)
- 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)
Frequently asked questions
- What is CVE-2018-11759?
- CVE-2018-11759 is a high-severity vulnerability in Apache Tomcat Jk Connector, classified under Path Traversal. CVSS score: 7.5/10. Published 2018-10-31.
- How severe is CVE-2018-11759?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-11759 known to be exploited?
- 40 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.