The GenericConsumer class in the Consumer component in ZendOpenId before 2.0.2 and the ZendOpenIdConsumer class in Zend Framework 1 before 1.12.4 violate the OpenID 2.0 protocol by ensuring only that at least one field is signed, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.

Zend Framework 1 (ZF1) before 1.12.4, Zend Framework 2 before 2.1.6 and 2.2.x before 2.2.6, ZendOpenId, ZendRest, ZendServiceAudioScrobbler, ZendServiceNirvanix, ZendServiceSlideShare, ZendServiceTechnorati, and ZendServiceWindowsAzure before 2.0.2, ZendServiceAmazon before 2.0.3, and ZendServiceApi before 1.0.0, when PHP-FPM is used, does not properly share the libxmldisableentityloader setting between threads, which might allow remote attackers to conduct XML External Entity (XXE) attacks via an XML external entity declaration in conjunction with an entity reference. NOTE: this issue exists because of an incomplete fix for CVE-2012-5657.

Zend Framework 1 (ZF1) before 1.12.4, Zend Framework 2 before 2.1.6 and 2.2.x before 2.2.6, ZendOpenId, ZendRest, ZendServiceAudioScrobbler, ZendServiceNirvanix, ZendServiceSlideShare, ZendServiceTechnorati, and ZendServiceWindowsAzure before 2.0.2, ZendServiceAmazon before 2.0.3, and ZendServiceApi before 1.0.0 allow remote attackers to read arbitrary files, send HTTP requests to intranet servers, and possibly cause a denial of service (CPU and memory consumption) via an XML External Entity (XXE) attack. NOTE: this issue exists because of an incomplete fix for CVE-2012-5657.

The GenericConsumer class in the Consumer component in ZendOpenId before 2.0.2 and the ZendOpenIdConsumer class in Zend Framework 1 before 1.12.4 does not verify that the openidopendpoint value identifies the same Identity Provider as the provider used in the association handle, which allows remote attackers to bypass authentication and spoof arbitrary OpenID identities by using a malicious OpenID Provider that generates OpenID tokens with arbitrary identifier and claimedid values.

Zend Framework 1 (ZF1) before 1.12.4, Zend Framework 2 before 2.1.6 and 2.2.x before 2.2.6, ZendOpenId, ZendRest, ZendServiceAudioScrobbler, ZendServiceNirvanix, ZendServiceSlideShare, ZendServiceTechnorati, and ZendServiceWindowsAzure before 2.0.2, ZendServiceAmazon before 2.0.3, and ZendServiceApi before 1.0.0 allow remote attackers to cause a denial of service (CPU consumption) via (1) recursive or (2) circular references in an XML entity definition in an XML DOCTYPE declaration, aka an XML Entity Expansion (XEE) attack. NOTE: this issue exists because of an incomplete fix for CVE-2012-6532.