CVE-2017-7189

Description

main/streams/xp_socket.c in PHP 7.x before 2017-03-07 misparses fsockopen calls, such as by interpreting fsockopen('127.0.0.1:80', 443) as if the address/port were 127.0.0.1:80:443, which is later truncated to 127.0.0.1:80. This behavior has a security risk if the explicitly provided port number (i.e., 443 in this example) is hardcoded into an application as a security policy, but the hostname argument (i.e., 127.0.0.1:80 in this example) is obtained from untrusted input.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.23%
Vendor Advisory php.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/php/php-src/commit/bab0b99f376dac9170ac81382a5ed526938d595a third party advisory patch
https://bugs.php.net/bug.php?id=74192 permissions required vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-7189?
CVE-2017-7189 has been scored as a high severity vulnerability.
How to fix CVE-2017-7189?
To fix CVE-2017-7189, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7189 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7189 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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