-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ================================================================================================================= OSSA-2020-004: Keystone credential endpoints allow owner modification and are not protected from a scoped context ================================================================================================================= :Date: May 06, 2020 :CVE: CVE-2020-12689, CVE-2020-12691 Affects ~~~~~~~ - - Keystone: <15.0.1, ==16.0.0 Description ~~~~~~~~~~~ kay reported two vulnerabilities in keystone's EC2 credentials API. Any authenticated user could create an EC2 credential for themselves for a project that they have a specified role on, then perform an update to the credential user and project, allowing them to masquerade as another user. (CVE-2020-12691) Any authenticated user within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. (CVE-2020-12689) Both of these vulnerabilities potentially allow a malicious user to act as admin on a project that another user has the admin role on, which can effectively grant the malicious user global admin privileges. Errata ~~~~~~ CVE-2020-12689 and CVE-2020-12691 were assigned after the original publication date. Patches ~~~~~~~ - - https://review.opendev.org/725895 (Rocky) - - https://review.opendev.org/725893 (Stein) - - https://review.opendev.org/725891 (Train) - - https://review.opendev.org/725888 (Ussuri) - - https://review.opendev.org/725886 (Victoria) Credits ~~~~~~~ - - kay (CVE-2020-12689, CVE-2020-12691) References ~~~~~~~~~~ - - https://launchpad.net/bugs/1872733 - - https://launchpad.net/bugs/1872735 - - http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12689 - - http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12691 Notes ~~~~~ - - The stable/rocky branch is under extended maintenance and will receive no new point releases, but a patch for it is provided as a courtesy. OSSA History ~~~~~~~~~~~~ - - 2020-05-07 - Errata 1 - - 2020-05-06 - Original Version -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEWa125cLHIuv6ekof56j9K3b+vREFAl60dYUACgkQ56j9K3b+ vRESOw//YJGlVKCPz7HkUtmyu6RWnpGzSPMoWhzP0HyLLpStMlrFXUKNZsgfXAw3 90vFD6zWSSWn2abJxlyW4JFDtOALKdGEZ0Ml68WSREDdupyOyd+G/ucT01Y95wB2 6nHkoHVvKbhPAI1OeV2haNGp02UUROSLGBT/FtvFnnCAcfAiUfI7+kBbLQgeG50q /MNQlfaWi0uBxCt/HZg0YqZ3QXIE/LuS2MgFkaQ2+Yr4r9V1M58Wi2pYA1Dkhz6e J7q/2hDJ1Nn7P4LHUuZEXupR3Ztjrnh5uIO8yr2jSK/r4DawCmRMqT24r7ebS5ZA /p+JhvV0+StujicmhfPSyY3A24kNHRQCSCOlFn0xF8aN+/VEFT82SOIf+NVuutZb 04wzrp4D3KIrSoulIbXVebAX+lj21qvlaYGwPAkmT8/p7kmj8mGWMlWhqBrCBJIC OiGd9pUe2GQcRSvBPj2Bex4WZCedvehSkPAiWh1MXFmUAUb2T7iNXNP7BlMd7LZA gdM4gW6HeFUEysj0vQfSCF+Mu+cB1PAjKZgqgHX7twgu+sOzlCKDlFkQuuzbma3M abGlfPwVl1v7X/xZ0U7xAwViFCAI+gpqA+Yi1hmMirxzyotUWn/J17AtvhOk3Hms mwUZiGr41oJhGhX3uSB2Jn0TulA+qhapncuMxG5qDk9Y/ijcpmQ= =ddr5 -----END PGP SIGNATURE----- On Wed, May 6, 2020 at 2:48 PM Gage Hugo <gagehugo@gmail.com> wrote:

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512

================================================================================================================= OSSA-2020-004: Keystone credential endpoints allow owner modification and are not protected from a scoped context

=================================================================================================================

:Date: May 06, 2020 :CVE: Pending

Affects ~~~~~~~ - - Keystone: <15.0.1, ==16.0.0

Description ~~~~~~~~~~~ kay reported two vulnerabilities in keystone's EC2 credentials API. Any authenticated user could create an EC2 credential for themselves for a project that they have a specified role on, then perform an update to the credential user and project, allowing them to masquerade as another user. (CVE #1 PENDING) Any authenticated user within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. (CVE #2 PENDING) Both of these vulnerabilities potentially allow a malicious user to act as admin on a project that another user has the admin role on, which can effectively grant the malicious user global admin privileges.

Patches ~~~~~~~ - - https://review.opendev.org/725895 (Rocky) - - https://review.opendev.org/725893 (Stein) - - https://review.opendev.org/725891 (Train) - - https://review.opendev.org/725888 (Ussuri) - - https://review.opendev.org/725886 (Victoria)

Credits ~~~~~~~ - - kay (CVE Pending)

References ~~~~~~~~~~ - - https://launchpad.net/bugs/1872733 - - https://launchpad.net/bugs/1872735 - - http://cve.mitre.org/cgi-bin/cvename.cgi?name=Pending

Notes ~~~~~ - - The stable/rocky branch is under extended maintenance and will receive no new point releases, but a patch for it is provided as a courtesy. -----BEGIN PGP SIGNATURE-----

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