5.4
MEDIUM
CVE-2023-32682
"Synapse Deactivated User Login Credential Disclosure"
Description

Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the `jwt_config.enabled` configuration setting. 2. The local password database is enabled via the `password_config.enabled` and `password_config.localdb_enabled` configuration settings *and* a user's password is updated via an admin API after a user is deactivated. Note that the local password database is enabled by default, but it is uncommon to set a user's password after they've been deactivated. Installations that are configured to only allow login via Single Sign-On (SSO) via CAS, SAML or OpenID Connect (OIDC); or via an external password provider (e.g. LDAP) are not affected. If not using JSON Web Tokens, ensure that deactivated users do not have a password set. This issue has been addressed in version 1.85.0. Users are advised to upgrade.

INFO

Published Date :

June 6, 2023, 7:15 p.m.

Last Modified :

June 17, 2023, 3:15 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2023-32682 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 Matrix synapse
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-32682.

URL Resource
https://github.com/matrix-org/synapse/pull/15624 Patch
https://github.com/matrix-org/synapse/pull/15634 Patch
https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p Mitigation Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2/
https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account Product
https://matrix-org.github.io/synapse/latest/jwt.html Product
https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config Product

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-2023-32682 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-32682 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 [email protected]

    May. 14, 2024

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

    Jun. 17, 2023

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 13, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
    Changed Reference Type https://github.com/matrix-org/synapse/pull/15624 No Types Assigned https://github.com/matrix-org/synapse/pull/15624 Patch
    Changed Reference Type https://github.com/matrix-org/synapse/pull/15634 No Types Assigned https://github.com/matrix-org/synapse/pull/15634 Patch
    Changed Reference Type https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p No Types Assigned https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p Mitigation, Patch, Vendor Advisory
    Changed Reference Type https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account No Types Assigned https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account Product
    Changed Reference Type https://matrix-org.github.io/synapse/latest/jwt.html No Types Assigned https://matrix-org.github.io/synapse/latest/jwt.html Product
    Changed Reference Type https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config No Types Assigned https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#password_config Product
    Added CPE Configuration OR *cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* versions up to (excluding) 1.85.0
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-2023-32682 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-2023-32682 weaknesses.

Exploit Prediction

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

0.14 }} 0.01%

score

0.49860

percentile

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