Adobe has been notified of an SSRF vulnerability (CVE-2015-5255) in BlazeDS. To fix the vulnerability retrospectively in BlazeDS distributions embedded in LiveCycle Data Services (LCDS), Adobe has released a patch that includes fixes in the flex-messaging-core.jar file.
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Patches are available for the following LCDS versions. See Adobe Security Bulletin for more information and to download the patch for your LCDS version.
- LCDS 3.0.0.354175
- LCDS 3.1.0.354180
- LCDS 4.5.1.354177
- LCDS 4.6.2.354178
- LCDS 4.7.0.354178
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Edit the services-config.xml file in your LCDS application. Add the property allow-xml-doctype-declaration under channels/channel-definition/properties/serialization and set its value to false. For example:
<services-config> | ---- <channels> | ---- <channel-definition ...> | ---- <properties> | ---- <serialization> | ---- <allow-xml-doctype-declaration> false </allow-xml-doctype-declaration>
Note:
After applying the patch, if you encounter the following error, it implies that your XML parser does not support the disallow-doctype-decl feature. In this case, you would need to update your XML parser to one that supports it. For example, Xerces 2.9.1.