#VU64586 Improper access control in Apache Tomcat - CVE-2016-5388
Vulnerability identifier: #VU64586
Vulnerability risk: Medium
CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-284
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Apache Tomcat
Server applications /
Web servers
Vendor: Apache Foundation
Description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists 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. A remote attacker can 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Apache Tomcat: 7.0.0 - 7.0.70, 8.0.0 RC1 - 8.0.5
External links
https://lists.opensuse.org/opensuse-updates/2016-09/msg00025.html
https://rhn.redhat.com/errata/RHSA-2016-1624.html
https://rhn.redhat.com/errata/RHSA-2016-2045.html
https://rhn.redhat.com/errata/RHSA-2016-2046.html
https://www.kb.cert.org/vuls/id/797896
https://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
https://www.securityfocus.com/bid/91818
https://www.securitytracker.com/id/1036331
https://access.redhat.com/errata/RHSA-2016:1635
https://access.redhat.com/errata/RHSA-2016:1636
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_us
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05324759
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
https://httpoxy.org/
https://lists.apache.org/thread.html/053d9ce4d579b02203db18545fee5e33f35f2932885459b74d1e4272@%3Cissues.activemq.apache.org%3E
https://lists.apache.org/thread.html/6b414817c2b0bf351138911c8c922ec5dd577ebc0b9a7f42d705752d@%3Cissues.activemq.apache.org%3E
https://lists.apache.org/thread.html/6d3d34adcf3dfc48e36342aa1f18ce3c20bb8e4c458a97508d5bfed1@%3Cissues.activemq.apache.org%3E
https://lists.apache.org/thread.html/r2853582063cfd9e7fbae1e029ae004e6a83482ae9b70a698996353dd@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rc6b2147532416cc736e68a32678d3947b7053c3085cf43a9874fd102@%3Cusers.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rf21b368769ae70de4dee840a3228721ae442f1d51ad8742003aefe39@%3Cusers.tomcat.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/08/msg00015.html
https://tomcat.apache.org/tomcat-7.0-doc/changelog.html
https://www.apache.org/security/asf-httpoxy-response.txt
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
