PHP OpenID Library vulnerable to XML external entity injection

2021.04.27

Kousuke Ebihara (JP)

Risk: High

Local: No

Remote: Yes

CVE: CVE-2013-4701

CWE: N/A

CVSS Base Score: 7.5/10

Impact Subscore: 6.4/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

Auth/Yadis/XML.php in PHP OpenID Library 2.2.2 and earlier allows remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service (CPU and memory consumption) via XRDS data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue. 

References:

http://jvn.jp/en/jp/JVN24713981/index.html

See this note in RAW Version

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PHP OpenID Library vulnerable to XML external entity injection

References:

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