CVE-2016-2049 Information

Description

examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://www.openwall.com/lists/oss-security/2016/01/24/2 http://www.openwall.com/lists/oss-security/2016/01/24/5

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8