CVE-2021-29433

CVSS V2 Medium 4 CVSS V3 Medium 4.3
Description
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.
Overview
  • CVE ID
  • CVE-2021-29433
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-15T18:15:12
  • Last Modified Date
  • 2022-08-02T16:01:36
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:matrix:sydent:*:*:*:*:*:*:*:* 1 OR 2.3.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 4.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553 Patch Third Party Advisory
https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29433
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29433
History
Created Old Value New Value Data Type Notes
2022-05-10 16:12:18 Added to TrackCVE
2022-12-06 02:02:06 2021-04-15T18:15Z 2021-04-15T18:15:12 CVE Published Date updated
2022-12-06 02:02:06 2022-08-02T16:01:36 CVE Modified Date updated
2022-12-06 02:02:06 Analyzed Vulnerability Status updated