-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Mon, 21 Sep 2026 17:37:21 +0200 Source: blazar Architecture: source Version: 18.0.0~rc1-3 Distribution: unstable Urgency: medium Maintainer: Debian OpenStack <[email protected]> Changed-By: Thomas Goirand <[email protected]> Closes: 1148408 Changes: blazar (18.0.0~rc1-3) unstable; urgency=medium . * CVE-2026-93852: In OpenStack Blazar before 17.0.1, the V2 lease listing operation (GET /v2/leases) returns leases for every project without enforcing project scoping or an administrator-only policy. Any authenticated user with access to the Blazar REST API can enumerate leases belonging to other tenants, exposing lease IDs, reservation IDs, resource IDs, and reservation metadata. The exposed lease IDs also enable the object-level authorization bypass tracked in the companion request, allowing an attacker to then modify or delete the enumerated leases. . CVE-2026-93854: In OpenStack Blazar before 17.0.1, the V2 lease API does not enforce object-level authorization on its update and delete operations (PUT /v2/leases/{lease_id} and DELETE /v2/leases/{lease_id}). The policy authorize() wrapper attempts to load the target lease to build the authorization target from its owner, but it looks up the lease under the keyword "lease_id" whereas the controller methods name the parameter "id" (and the wsme_pecan.wsexpose wrapper delivers it positionally). The lookup returns None, and thus authorization falls back to the requesting user's own project_id/user_id instead of the target lease owner. Any authenticated user who knows a lease ID can therefore modify or delete leases belonging to other users and projects, bypassing the intended ownership check. . Applied upstream patch (Closes: #1148408). - CVE-2026-93852_CVE-2026-93854_Fix_v2_API_object-level_authorizat....patch Checksums-Sha1: 12be7ae28b56b701fe1018673bbd2e7f6c4e2bcc 3218 blazar_18.0.0~rc1-3.dsc 14a63674056f6e8a0b425fd6dabf435618fd060f 9668 blazar_18.0.0~rc1-3.debian.tar.xz a11938f72ce71e4fa65ca26efe2ad150bd126167 14968 blazar_18.0.0~rc1-3_amd64.buildinfo Checksums-Sha256: 8ef07aec5f5796b439e2f3623e6ca8194b86400f28e0e323957feebbe52b4263 3218 blazar_18.0.0~rc1-3.dsc 87abd72db1a4ed08b2ab0b0163b0c8e345a3dd70851939fc00ff26d832f5f761 9668 blazar_18.0.0~rc1-3.debian.tar.xz 15a51999c4f2f632783c45ddec05b15f4e0d5eac34c397551ea29000bbc8981f 14968 blazar_18.0.0~rc1-3_amd64.buildinfo Files: db83949aa1fd9f97313e17a0a67ed6e7 3218 web optional blazar_18.0.0~rc1-3.dsc 9fae86a410e79ff6cf717458a1bdc275 9668 web optional blazar_18.0.0~rc1-3.debian.tar.xz c08fad2be2ad27eea9d670e354373a31 14968 web optional blazar_18.0.0~rc1-3_amd64.buildinfo
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