PHP OpenID Library vulnerable to XML external entity injection

2021.04.27
jp Kousuke Ebihara (JP) 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


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