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CVE-2023-41335— Temporary storage of plaintext passwords during password changes in matrix synapse

Quick assessment

Affected
matrix-org synapse
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

synapse是一个应用程序。用于开放式联合即时消息和VoIP Synapse存在安全漏洞，该漏洞源于在密码更改期间临时存储了明文密码。受影响的产品和版本；Synapse 1.66.0至1.93.0之前版本。

CVSS 3.7 · Low EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2023-41335

Vulnerability Information
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Vulnerability Title
Temporary storage of plaintext passwords during password changes in matrix synapse
Source: CVE Program / CVE List V5
Vulnerability Description
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration. These temporarily stored passwords are automatically erased after a 48-hour window. This issue has been addressed in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的明文存储
Source: CVE Program / CVE List V5
Vulnerability Title
Synapse 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
synapse是一个应用程序。用于开放式联合即时消息和VoIP Synapse存在安全漏洞，该漏洞源于在密码更改期间临时存储了明文密码。受影响的产品和版本；Synapse 1.66.0至1.93.0之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
matrix-org synapse >= 1.66.0, < 1.93.0 -

II. Public POCs for CVE-2023-41335

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III. Intelligence Information for CVE-2023-41335

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Patches & Fixes for CVE-2023-41335 (1)

Vendor Advisories for CVE-2023-41335 (2)

Mailing List Discussions for CVE-2023-41335 (3)

IV. Related Vulnerabilities

Same product: synapse
Same vendor: matrix-org
Same weakness: CWE-312

V. Comments for CVE-2023-41335

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