Vulnerability Name:

CVE-2017-7189 (CCN-163591)

Assigned:2017-03-07
Published:2017-03-07
Updated:2019-07-17
Summary: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.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-7189

Source: MISC
Type: Permissions Required, Vendor Advisory
https://bugs.php.net/bug.php?id=74192

Source: XF
Type: UNKNOWN
php-cve20177189-unspecified(163591)

Source: CCN
Type: PHP GIT Repository
Detect invalid port in xp_socket parse ip address

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/php/php-src/commit/bab0b99f376dac9170ac81382a5ed526938d595a

Vulnerable Configuration:Configuration 1:
  • cpe:/a:php:php:*:*:*:*:*:*:*:* (Version >= 7.0.0 and < 7.0.16)

  • Configuration CCN 1:
  • cpe:/a:php:php:7.0:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.cosmic:def:201771890000000
    V
    CVE-2017-7189 on Ubuntu 18.10 (cosmic) - low.
    2019-07-10
    oval:com.ubuntu.bionic:def:201771890000000
    V
    CVE-2017-7189 on Ubuntu 18.04 LTS (bionic) - low.
    2019-07-10
    oval:com.ubuntu.xenial:def:201771890000000
    V
    CVE-2017-7189 on Ubuntu 16.04 LTS (xenial) - low.
    2019-07-10
    oval:com.ubuntu.disco:def:201771890000000
    V
    CVE-2017-7189 on Ubuntu 19.04 (disco) - low.
    2019-07-10
    BACK
    php php *
    php php 7.0