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CVE-2016-5385

HIGHCVSS 8.1/10EPSS 50.43%

Last modified

CVE-2016-5385 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts 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, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.. EPSS estimates a 50.43% chance of exploitation in the next 30 days.

Description

PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts 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, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
50.43%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OracleCommunications User Data Repository10.0.0
OracleCommunications User Data Repository10.0.1
OracleCommunications User Data Repository12.0.0
OracleEnterprise Manager Ops Center12.2.2
OracleEnterprise Manager Ops Center12.3.2
OracleLinux6
OracleLinux7
FedoraprojectFedora23
FedoraprojectFedora24
HpStoreever Msl6480 Tape Library Firmware<= 5.09
HpSystem Management Homepage<= 7.5.5.0
PhpPhp>= 5.5.0, < 5.5.38
PhpPhp>= 5.6.0, < 5.6.24
PhpPhp>= 7.0.0, <= 7.0.8
RedhatEnterprise Linux Desktop6.0
RedhatEnterprise Linux Server6.0
RedhatEnterprise Linux Workstation6.0
DebianDebian Linux8.0
OpensuseLeap42.1
DrupalDrupal>= 8.0.0, < 8.1.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2016-5385?
PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts 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, as demonstrated by (1) an application that makes a getenv('HTTP_PROXY') call or (2) a CGI configuration of PHP, aka an "httpoxy" issue.
How severe is CVE-2016-5385?
CVE-2016-5385 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 50.43% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5385?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST