CVE-2016-5387
The Apache HTTP Server through 2.4.23 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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 55.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
The Apache HTTP Server through 2.4.23 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 "This mitigation has been assigned the identifier CVE-2016-5387"; in other words, this is not a CVE ID for a vulnerability.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 55.72% probability · 99th percentile
- CISA KEV
- Not listed
- Affected
- apache/http server · hp/system management homepage · oracle/communications user data repository · oracle/enterprise manager ops center · oracle/linux · oracle/solaris · fedoraproject/fedora · redhat/jboss web server · redhat/jboss enterprise web server · redhat/jboss core services · redhat/enterprise linux desktop · redhat/enterprise linux eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux workstation · debian/debian linux · canonical/ubuntu linux · opensuse/leap · opensuse/opensuse
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00059.htmlMailing List, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1624.htmlBroken Link, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1625.htmlBroken Link, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1648.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1649.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1650.htmlBroken Link, Third Party Advisory
- http://www.debian.org/security/2016/dsa-3623Third Party Advisory
- http://www.kb.cert.org/vuls/id/797896Third Party Advisory, US Government Resource
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatch, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.securityfocus.com/bid/91816Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1036330Broken Link, Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3038-1Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1420Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1421Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1422Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1635Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1636Third Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1851Third Party Advisory
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_usThird Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149Third Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722Third Party Advisory
- https://httpoxy.org/Third Party Advisory
- https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%40%3Ccvs.httpd.apache.org%3E
- https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.