Auth bypass in Apache Tomcat
CVE-2016-6797
The ResourceLinkFactory implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not limit web application access to global JNDI resources to those resources explicitly linked to the web application. Therefore, it was possible for a web application to access any global JNDI resource whether an explicit ResourceLink had been configured or not.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.081 (94.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.081 · newest: 0.081 · change: 0.000
Affected products
- Apache Tomcat — versions 9.0.0
- Apache Software Foundation Tomcat — versions 6.0.0 to 6.0.45, 8.5.0 to 8.5.4, 7.0.0 to 7.0.70
- NetApp Oncommand Insight
- NetApp Oncommand Shift
- NetApp Snap Creator Framework
- Oracle Tekelec Platform Distribution
- Canonical Ubuntu Linux — versions 16.04
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Eus — versions 7.4, 7.5, 7.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/93940 (vdb-entry, Broken Link)
- lists.apache.org/thread.html/9325837eb00cba5752c092047433c7f0415134d16e7f391447… (mailing-list)
- www.securitytracker.com/id/1037145 (vdb-entry, Broken Link)
- access.redhat.com/errata/RHSA-2017:2247 (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2017-0457.html (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:0455 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2016/dsa-3720 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:0456 (vendor-advisory, Third Party Advisory)
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f… (mailing-list)
- lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033… (mailing-list)
Frequently asked questions
- What is CVE-2016-6797?
- CVE-2016-6797 is a high-severity vulnerability in Apache Tomcat, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2017-08-10.
- How severe is CVE-2016-6797?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-6797 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.