Bug 1216126 (CVE-2023-45129) - VUL-0: CVE-2023-45129: matrix-synapse: malicious ACL event can cause denial of service
Summary: VUL-0: CVE-2023-45129: matrix-synapse: malicious ACL event can cause denial o...
Status: VERIFIED FIXED
Alias: CVE-2023-45129
Product: openSUSE Distribution
Classification: openSUSE
Component: Security (show other bugs)
Version: Leap 15.6
Hardware: Other Other
: P5 - None : Normal (vote)
Target Milestone: ---
Assignee: Oliver Kurz
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/381499/
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Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-11 09:59 UTC by SMASH SMASH
Modified: 2023-10-11 13:14 UTC (History)
2 users (show)

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Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2023-10-11 09:59:15 UTC 
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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-45129
https://github.com/matrix-org/synapse/pull/16360
https://github.com/matrix-org/synapse/security/advisories/GHSA-5chr-wjw5-3gq4
https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#version-2-new-version
Comment 1 Robert Frohl 2023-10-11 10:01:37 UTC 
already fixed, closing
Comment 2 OBSbugzilla Bot 2023-10-11 12:35:08 UTC 
This is an autogenerated message for OBS integration:
This bug (1216126) was mentioned in
https://build.opensuse.org/request/show/1116889 Factory / matrix-synapse
Comment 3 Oliver Kurz 2023-10-11 13:14:16 UTC 
https://build.opensuse.org/request/show/1116889