CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2024-31208 – Synapse's V2 state resolution weakness allows DoS from remote room members
https://notcve.org/view.php?id=CVE-2024-31208
Synapse is an open-source Matrix homeserver. A remote Matrix user with malicious intent, sharing a room with Synapse instances before 1.105.1, can dispatch specially crafted events to exploit a weakness in the V2 state resolution algorithm. This can induce high CPU consumption and accumulate excessive data in the database of such instances, resulting in a denial of service. Servers in private federations, or those that do not federate, are not affected. Server administrators should upgrade to 1.105.1 or later. • https://github.com/element-hq/synapse/commit/55b0aa847a61774b6a3acdc4b177a20dc019f01a https://github.com/element-hq/synapse/releases/tag/v1.105.1 https://github.com/element-hq/synapse/security/advisories/GHSA-3h7q-rfh9-xm4v https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R6FCCO4ODTZ3FDS7TMW76PKOSEL2TQVB https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RR53FNHV446CB37TP45GZ6F6HZLZCK3K https://lists.fedoraproject.org/archives/list/package-announce@lists. • CWE-770: Allocation of Resources Without Limits or Throttling •
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: 7.8EPSS: 0%CPEs: 2EXPL: 3CVE-2022-47631 – Razer Synapse Race Condition / DLL Hijacking
https://notcve.org/view.php?id=CVE-2022-47631
Razer Synapse through 3.7.1209.121307 allows privilege escalation due to an unsafe installation path and improper privilege management. Attackers can place DLLs into %PROGRAMDATA%\Razer\Synapse3\Service\bin if they do so before the service is installed and if they deny write access for the SYSTEM user. Although the service will not start if it detects malicious DLLs in this directory, attackers can exploit a race condition and replace a valid DLL (i.e., a copy of a legitimate Razer DLL) with a malicious DLL after the service has already checked the file. As a result, local Windows users can abuse the Razer driver installer to obtain administrative privileges on Windows. Razer Synapse hasta 3.7.1209.121307 permite la escalada de privilegios debido a una ruta de instalación insegura y una gestión de privilegios inadecuada. • http://packetstormsecurity.com/files/174696/Razer-Synapse-Race-Condition-DLL-Hijacking.html http://seclists.org/fulldisclosure/2023/Sep/6 https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2023-002.txt • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
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) •