CVE-2023-41335: Matrix synapse Matrix-synapse Vulnerable To Temporary Storage Vulnerability
LOWCVE-2023-41335 is a LOW (CVSS 3.7) matrix-synapse vulnerable to temporary storage vulnerability (CWE-312: Cleartext Storage of Sensitive Information) affecting Matrix synapse libraries in the PyPI ecosystem. The issue involves matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes. Remediation is available by upgrading affected packages to version 1.93.0.
CVE-2023-41335 at a Glance
Security Impact
CVSS: 3.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N).
How to Fix CVE-2023-41335
To remediate this vulnerability, upgrade all affected Matrix synapse dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
pip install matrix-synapse>=1.93.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
pip show matrix-synapseHow to Check if You Are Affected
To determine whether your Python environment is affected by CVE-2023-41335, inspect your installed packages using pip:
pip show matrix-synapseAnalyze the terminal output to locate any version of Matrix synapse in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.93.0), your application is affected.
Note: The pip show matrix-synapse command checks currently installed packages in your active Python environment.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-312: Cleartext Storage of Sensitive Information, where the product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. In Matrix synapse, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-41335 Affected Matrix synapse Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
matrix-synapse
|
PyPI |
≥ 1.66.0
< 1.93.0
|
1.93.0
|
References
Frequently Asked Questions
What is CVE-2023-41335?
Which Matrix synapse versions are affected?
What version fixes CVE-2023-41335?
Is matrix-synapse affected?
What is the CVSS score of CVE-2023-41335?
What CWE is associated with CVE-2023-41335?
How can I check PyPI dependencies for CVE-2023-41335?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-4f74-84v3-j9q5",
"modified" : "2024-09-30T20:42:56Z",
"published" : "2023-09-26T18:55:24Z",
"aliases" : [ "CVE-2023-41335" ],
"summary" : "matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes",
"details" : "### Impact\n\nWhen 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.\n\nThese temporarily stored passwords are automatically erased after a 48-hour window.\n\n### Patches\nhttps://github.com/matrix-org/synapse/pull/16272\n\n### References\n\nThis bug was due to a regression in https://github.com/matrix-org/synapse/pull/13188.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "PyPI",
"name" : "matrix-synapse"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.66.0"
}, {
"fixed" : "1.93.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/matrix-org/synapse/security/advisories/GHSA-4f74-84v3-j9q5"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41335"
}, {
"type" : "WEB",
"url" : "https://github.com/matrix-org/synapse/pull/13188"
}, {
"type" : "WEB",
"url" : "https://github.com/matrix-org/synapse/pull/16272"
}, {
"type" : "WEB",
"url" : "https://github.com/matrix-org/synapse/commit/69b74d9330e42fc91a9c7423d00a06cd6d3732bf"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/matrix-org/synapse"
}, {
"type" : "WEB",
"url" : "https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-185.yaml"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY"
}, {
"type" : "WEB",
"url" : "https://security.gentoo.org/glsa/202401-12"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-312" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2023-09-26T18:55:24Z",
"nvd_published_at" : "2023-09-27T15:19:30Z"
}
}