Vulnerability in Apache Tomcat
CVE-2016-5388
Apache Tomcat 7.x through 7.0.70 and 8.x through 8.5.4, when the CGI Servlet is enabled, follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue. NOTE: the vendor states "A mitigation is planned for future releases of Tomcat, tracked as CVE-2016-5388"; in other words, this is not a CVE ID for a vulnerability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.509 (98.9th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.509 · newest: 0.509 · change: 0.000
Affected products
- Apache Tomcat
- HP System Management Homepage
- Oracle Linux — versions 6, 7
- Red Hat Enterprise Linux Desktop — versions 7.0, 6.0
- Red Hat Enterprise Linux Hpc Node — versions 7.0, 6.0
- Red Hat Enterprise Linux Hpc Node Eus — versions 7.2
- Red Hat Enterprise Linux Server — versions 7.0, 6.0
- Red Hat Enterprise Linux Server Aus — versions 7.2
- Red Hat Enterprise Linux Server Eus — versions 7.2
- Red Hat Enterprise Linux Server Tus — versions 7.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2016:1635 (vendor-advisory, Third Party Advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- www.kb.cert.org/vuls/id/797896 (US Government Resource, Third Party Advisory, third-party-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2045.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2046.html (vendor-advisory, Third Party Advisory)
- tomcat.apache.org/tomcat-7.0-doc/changelog.html (Release Notes, Vendor Advisory)
- www.securityfocus.com/bid/91818 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-updates/2016-09/msg00025.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-5388?
- CVE-2016-5388 is a high-severity vulnerability in Apache Tomcat, classified under Improper Access Control. CVSS score: 8.1/10. Published 2016-07-19.
- How severe is CVE-2016-5388?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2016-5388 known to be exploited?
- 45 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.