4.3
MEDIUM
CVE-2023-42453
"Synapse Matrix Server Read Receipt Forgery Vulnerability"
Description

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.

INFO

Published Date :

Sept. 27, 2023, 3:19 p.m.

Last Modified :

Nov. 21, 2024, 8:22 a.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2023-42453 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Matrix synapse

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-42453 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-42453 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/matrix-org/synapse/pull/16327
    Added Reference https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO/
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY/
    Added Reference https://security.gentoo.org/glsa/202401-12
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jan. 07, 2024

    Action Type Old Value New Value
    Added Reference GitHub, Inc. https://security.gentoo.org/glsa/202401-12 [No types assigned]
  • CVE Modified by [email protected]

    Nov. 03, 2023

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Oct. 18, 2023

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/ Mailing List, Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO/ Mailing List, Release Notes
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 06, 2023

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 29, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    Changed Reference Type https://github.com/matrix-org/synapse/pull/16327 No Types Assigned https://github.com/matrix-org/synapse/pull/16327 Issue Tracking, Patch
    Changed Reference Type https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x No Types Assigned https://github.com/matrix-org/synapse/security/advisories/GHSA-7565-cq32-vx2x Vendor Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* versions from (including) 1.34.0 up to (excluding) 1.93.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-42453 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-42453 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} -0.00%

score

0.35158

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability