PIA’s OIDC issuer allowlist for Jenkins tokens uses a bare string-prefix check (issuer.startswith(‘ https:\/\/ci.eclipse.org ‘) in is_issuer_known, pia\/models.py:139) instead of validating the issuer as a properly host-bounded URL. An attacker can craft an issuer such as https:\/\/ci.eclipse.org@evil.host (userinfo trick) or https:\/\/ci.eclipse.org.evil.host (suffix trick) that satisfies the prefix check while pointing the OIDC discovery and JWKS fetches at a server the attacker controls. An unauthenticated caller of POST \/v1\/upload\/sbom can use this to force PIA to make outbound HTTP(S) requests to an arbitrary attacker-chosen host, and to have oidc.verify_token accept a JWT signed with the attacker’s own key.<\/p>\n","protected":false},"excerpt":{"rendered":"
PIA’s OIDC issuer allowlist for Jenkins tokens uses a bare string-prefix check (issuer.startswith(‘ https:\/\/ci.eclipse.org ‘) in is_issuer_known, pia\/models.py:139) instead of validating the issuer as<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-12618","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/12618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}