Vulnerability DatabaseCVE-2021-29433
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CVE-2021-29433
April 15, 2021
Sydent is a reference Matrix identity server. In Sydent versions 2.2.0 and prior, sissing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion. A patch for the vulnerability is in version 2.3.0. No workarounds are known to exist.
Affected Packages
matrix-sydent (PYTHON):
Affected version(s) >=2.0.0 <2.3.0
Fix Suggestion:
Update to version 2.3.0
Related Resources (7)
https://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-24.yaml
https://github.com/matrix-org/sydent
https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553
https://pypi.org/project/matrix-sydent/
https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da
https://pypi.org/project/matrix-sydent
https://nvd.nist.gov/vuln/detail/CVE-2021-29433
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
CVSS v2
Base Score:
4
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400
Improper Input Validation
CWE-20
EPSS
Base Score:
0.28