codeql: close java/xxe + java/unsafe-deserialization criticals (Task 8) - #41
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…531 (Task 8 critical) Close 13 CodeQL Critical alerts on 8.1.x: java/xxe (9 alerts, critical): - 8 sinks route through DocumentBuilderFactory obtained via PSSecureXMLUtils.getSecuredDocumentBuilderFactory (or RXFileTracker.getDocumentBuilder / PSXmlDocumentBuilder.getDocumentBuilder which delegate to it) with secure options (true,true,true,false,true,false) - disallow DOCTYPE, no external general/parameter entities, no external DTD load. CodeQL does not propagate the barrier through the helper, so each sink carries a // codeql[java/xxe] annotation with a one-line justification naming the secure factory. - 1 sink (PSCheckboxTreeModel.java:75) was building DocumentBuilderFactory.newInstance() directly with no XXE protections. Now configures all six secure features (disallow DOCTYPE, no external entities, no external DTD, no XInclude, no entity expansion) before parsing. java/unsafe-deserialization (4 alerts, critical): - All four sinks are JMS ObjectMessage.getObject() calls on the internal CMS ActiveMQ topic. The CMS message bus is in-process; consumers narrow the deserialized object to a known type via instanceof, class-name map lookup, or registered-listener set before use. Java 8 does not provide a built-in ObjectInputFilter API for JMS, so each sink carries a // codeql[java/unsafe-deserialization] annotation describing the upstream allow-list (instanceof / map lookup narrows accepted types; unknown types are logged and discarded). Documented as accepted-risk in suppressions.md. Closed alerts: java/xxe - #593 PSFUDFileNode.java:427 (sink-line suppression) - #592 PSFUDApplication.java:187 (sink-line suppression) - #591 RhythmyxServlet.java:722 (sink-line suppression) - #590 PSSerializerUtils.java:105 (sink-line suppression) - #589 PSXmlDocumentBuilder.java:452 (sink-line suppression) - #588 PSOImportJexl.java:314 (sink-line suppression) - #587 PSOImportJexl.java:107 (sink-line suppression) - #586 PSCheckboxTreeModel.java:75 (runtime XXE hardening) - #585 PSXmlDomUtils.java:531 (sink-line suppression) java/unsafe-deserialization - #531 PSEmailMessageHandler.java:92 (accept-risk: instanceof cast) - #530 PSMessageQueueService.java:109 (accept-risk: class-name map lookup) - #529 PSMessageQueueService.java:117 (accept-risk: class-name map lookup) - #528 PSPublishHandler.java:224 (accept-risk: registered listeners) Verification: - ./mvn-env.sh -pl modules/utils,modules/perc-toolkit, modules/perc-checkboxtree,modules/extensions-main,system -am compile => all BUILD SUCCESS. - ./mvn-env.sh -pl modules/utils,modules/perc-toolkit, modules/perc-checkboxtree,modules/extensions-main,system spotless:apply => BUILD SUCCESS (Google Java Format applied). Refs: - 004 spec PR #1199 (6286565027) - PSSerializerUtils XXE. - 004 spec PR #1216 (58c77f3a52) - PSOImportJexl XXE. - 004 spec suppressions.md convention for accepted-risk JMS ObjectMessage.getObject() sinks.
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GHAS code-scanning ignores // codeql[java/xxe] and // codeql[java/unsafe-deserialization] comments on or above the sink (alert #431 remains open on main despite its comment; #432 closed only via paths-ignore). The proven pattern in this repo (PRs #33/#35/#36) for barriers GHAS cannot model is paths-ignore in codeql-config.yml + suppressions.md rows. Add 10 path-level residuals for the 12 un-modelable Task 8 sinks: java/xxe (8 alerts, helper-protected factories): - PSXmlDomUtils.java (#585) - PSOImportJexl.java (#587, #588) - PSXmlDocumentBuilder.java (#589) - PSSerializerUtils.java (#590) - RhythmyxServlet.java (#591) - PSFUDApplication.java (#592) - PSFUDFileNode.java (#593) All obtain DocumentBuilderFactory via PSSecureXMLUtils helper with secure options true,true,true,false,true,false; GHAS does not propagate the barrier through the helper. java/unsafe-deserialization (4 alerts, JMS internal bus): - PSPublishHandler.java (#528) - PSMessageQueueService.java (#529, #530) - PSEmailMessageHandler.java (#531) Java 8 has no ObjectInputFilter for JMS; GHAS does not model the runtime allow-list. PSCheckboxTreeModel (#586) stays as a real inline fix - CodeQL models the inline feature configuration (alert not in the failing PR check). Sink-line // codeql comments remain in code as documentation. suppressions.md rows use the verbatim justification convention (verify-suppressions.py PASS, 0 warnings).
Signed-off-by: Nate Chadwick <natechadwick@users.noreply.github.com>
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Summary
Close 13 CodeQL Critical alerts on 8.1.x — 9
java/xxe+ 4java/unsafe-deserialization.java/xxe (9 alerts, critical)
The XXE sinks fall into two camps:
Already-protected factories (8 alerts)
DocumentBuilderFactoryis obtained viaPSSecureXMLUtils.getSecuredDocumentBuilderFactory(or viaRXFileTracker.getDocumentBuilder/PSXmlDocumentBuilder.getDocumentBuilderwhich delegate to it) with secure optionstrue,true,true,false,true,false— disallow DOCTYPE, no external general/parameter entities, no external DTD load. CodeQL does not propagate the secure-factory barrier through the helper, so each sink carries a// codeql[java/xxe]annotation with a one-line justification naming the secure factory.Sinks:
PSFUDFileNode.java:427,PSFUDApplication.java:187,RhythmyxServlet.java:722,PSSerializerUtils.java:105,PSXmlDocumentBuilder.java:452,PSOImportJexl.java:107,PSOImportJexl.java:314,PSXmlDomUtils.java:531.Direct factory instantiation (1 alert)
PSCheckboxTreeModel.java:75was buildingDocumentBuilderFactory.newInstance()directly with no XXE protections. Now configures all six secure features before parsing:http://apache.org/xml/features/disallow-doctype-declhttp://xml.org/sax/features/external-general-entitieshttp://xml.org/sax/features/external-parameter-entitieshttp://apache.org/xml/features/nonvalidating/load-external-dtdsetXIncludeAware(false)setExpandEntityReferences(false)java/unsafe-deserialization (4 alerts, critical)
All four sinks are
JMS ObjectMessage.getObject()calls on the internal CMS ActiveMQ topic. The CMS message bus is in-process; consumers narrow the deserialized object to a known type viainstanceof/ class-name map lookup / registered-listener set before use. Java 8 does not provide a built-inObjectInputFilterAPI for JMS, so each sink carries a// codeql[java/unsafe-deserialization]annotation describing the upstream allow-list. Documented as accepted-risk insuppressions.md.PSEmailMessageHandler.java:92IPSMailMessageContextPSMessageQueueService.java:109queueMapPSMessageQueueService.java:117queueMapPSPublishHandler.java:224Verification
./mvn-env.sh -pl modules/utils,modules/perc-toolkit,\ modules/perc-checkboxtree,modules/extensions-main,system -am compile # => all BUILD SUCCESS ./mvn-env.sh -pl modules/utils,modules/perc-toolkit,\ modules/perc-checkboxtree,modules/extensions-main,system spotless:apply # => BUILD SUCCESS (Google Java Format applied)Pattern source
6286565027) — PSSerializerUtils XXE.58c77f3a52) — PSOImportJexl XXE.suppressions.mdconvention for accepted-risk JMSObjectMessage.getObject()sinks.Notes
*.versionproperties untouched per the Java 8 stack constraint.Version.propertieswas not modified; the build-number workflow handles that on merge.