CVSS: 5.3EPSS: 0%CPEs: 3EXPL: 0CVE-2023-43796 – Synapse vulnerable to leak of remote user device information
https://notcve.org/view.php?id=CVE-2023-43796
Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver. Synapse es un servidor doméstico Matrix de código abierto. • https://github.com/matrix-org/synapse/commit/daec55e1fe120c564240c5386e77941372bf458f https://github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2IDEEZMFJBDLTFHQUTZRJJNCOZGQ2ZVS https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VH3RNC5ZPQZ4OKPSL4E6BBJSZOQLGDEY https://security.gentoo.org/glsa/202401-12 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 4.9EPSS: 0%CPEs: 3EXPL: 0CVE-2023-45129 – matrix-synapse vulnerable to denial of service due to malicious server ACL events
https://notcve.org/view.php?id=CVE-2023-45129
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Prior to version 1.94.0, a malicious server ACL event can impact performance temporarily or permanently leading to a persistent denial of service. Homeservers running on a closed federation (which presumably do not need to use server ACLs) are not affected. Server administrators are advised to upgrade to Synapse 1.94.0 or later. As a workaround, rooms with malicious server ACL events can be purged and blocked using the admin API. • https://github.com/matrix-org/synapse/pull/16360 https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KEVRB4MG5UXQ5RLZHSUJXM5GWEBYYS5B https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRO4MPQ6HOXIUZM6RJP6VTCTMV7RD2T3 https://matrix-org.github.io/synapse/latest • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 3.7EPSS: 0%CPEs: 3EXPL: 0CVE-2023-41335 – Temporary storage of plaintext passwords during password changes in matrix synapse
https://notcve.org/view.php?id=CVE-2023-41335
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration. These temporarily stored passwords are automatically erased after a 48-hour window. • https://github.com/matrix-org/synapse/pull/16272 https://github.com/matrix-org/synapse/security/advisories/GHSA-4f74-84v3-j9q5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY https://security.gentoo.org/glsa/202401-12 • CWE-312: Cleartext Storage of Sensitive Information •
CVSS: 4.3EPSS: 0%CPEs: 3EXPL: 0CVE-2023-42453 – Improper validation of receipts allows forged read receipts in matrix synapse
https://notcve.org/view.php?id=CVE-2023-42453
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. • https://github.com/matrix-org/synapse/pull/16327 https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY https://security.gentoo.org/glsa/202401-12 • CWE-285: Improper Authorization •
CVSS: 5.4EPSS: 0%CPEs: 1EXPL: 0CVE-2023-32683 – URL deny list bypass via oEmbed and image URLs when generating previews in Synapse
https://notcve.org/view.php?id=CVE-2023-32683
Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. A discovered oEmbed or image URL can bypass the `url_preview_url_blacklist` setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the `url_preview_ip_range_blacklist` setting (by default this only allows public IPs) and by the limited information returned to the client: 1. For discovered oEmbed URLs, any non-JSON response or a JSON response which includes non-oEmbed information is discarded. 2. For discovered image URLs, any non-image response is discarded. • https://github.com/matrix-org/synapse/pull/15601 https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2 • CWE-863: Incorrect Authorization CWE-918: Server-Side Request Forgery (SSRF) •