Ubuntu.comUB:CVE-2023-42453CVE-2023-42453
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
25.1%
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. Users are advised
to upgrade. There are no known workarounds for this issue.
Bugs
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | matrix-synapse | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | matrix-synapse | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | matrix-synapse | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | matrix-synapse | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | matrix-synapse | < any | UNKNOWN |
Related
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
25.1%