Denial of service (via resource exhaustion) due to improper input validation
CVE-2021-29433

4.3MEDIUM

Key Information:

Vendor

Matrix-org

Status
Sydent
Vendor
CVE Published:
15 April 2021

What is 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.

Affected Version(s)

sydent <= 2.2.0

References

https://github.com/matrix-org/sydent/security/advisories/...
x_refsource_CONFIRM
https://github.com/matrix-org/sydent/commit/3175fd358ebc2...
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.