CVE-2021-29433

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-29433
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.

4.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

4.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da Patch Third Party Advisory
https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553 Patch Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:matrix:sydent:*:*:*:*:*:*:*:*
History

21 Jul 2022, 12:37

Type Values Removed Values Added
CWE CWE-400 CWE-20
References (MISC) https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da - (MISC) https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da - Patch, Third Party Advisory

07 Jun 2021, 12:15

Type Values Removed Values Added
References
  • {'url': 'https://pypi.org/project/matrix-sydent/', 'name': 'https://pypi.org/project/matrix-sydent/', 'tags': ['Product', 'Third Party Advisory'], 'refsource': 'MISC'}
  • (MISC) https://github.com/matrix-org/sydent/commit/3175fd358ebc2c310eab7a3dbf296ce2bd54c1da -
Summary ### Impact Missing 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. ### Patches Fixed by 3175fd3. ### Workarounds There are no known workarounds. ### References n/a ### For more information If you have any questions or comments about this advisory, email us at security@matrix.org. 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.

22 Apr 2021, 17:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 4.0
v3 : 4.3
CWE CWE-20 CWE-400
CPE cpe:2.3:a:matrix:sydent:*:*:*:*:*:*:*:*
References (CONFIRM) https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553 - (CONFIRM) https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553 - Patch, Third Party Advisory
References (MISC) https://pypi.org/project/matrix-sydent/ - (MISC) https://pypi.org/project/matrix-sydent/ - Product, Third Party Advisory

15 Apr 2021, 19:32

Type Values Removed Values Added
New CVE
Information

Published : 2021-04-15 18:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-29433

Mitre link : CVE-2021-29433

CVE.ORG link : CVE-2021-29433

JSON object : View

Products Affected

matrix

  • sydent
CWE
CWE-20

Improper Input Validation

CWE-400

Uncontrolled Resource Consumption