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CVE Vulnerabilities

CVE-2015-8866

Improper Restriction of XML External Entity Reference

Published: May 22, 2016 | Modified: Apr 12, 2025
CVSS 3.x
9.6
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
4.3 LOW
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V3
3.7 LOW
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2015-8866
CWEhttps://cwe.mitre.org/data/definitions/611.html

ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.

Weakness

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Affected Software

NameVendorStart VersionEnd Version
PhpPhp5.5.0 (including)5.5.22 (excluding)
PhpPhp5.6.0 (including)5.6.6 (excluding)
PhpPhp7.0.0 (including)7.0.27 (excluding)
PhpPhp7.1.0 (including)7.1.13 (excluding)
PhpPhp7.2.0 (including)7.2.1 (excluding)
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-0:2.3-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-php-0:5.6.25-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-php56-php-pear-1:1.9.5-4.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-0:2.3-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-php-0:5.6.25-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-php56-php-pear-1:1.9.5-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.2 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-0:2.3-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-php-0:5.6.25-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSRedHatrh-php56-php-pear-1:1.9.5-4.el7*
Php5Ubuntuesm-infra-legacy/trusty*
Php5Ubuntuprecise*
Php5Ubuntutrusty*
Php5Ubuntutrusty/esm*
Php5Ubuntuupstream*

Potential Mitigations

References

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