CVE-2021-29433 — Improper Input Validation in Sydent

CWE-20 — Improper Input ValidationCWE-400 — Uncontrolled Resource Consumption5 documents4 sources
Severity
4.3MEDIUMNVD
EPSS
0.3%
top 48.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Matrix SydentMatrix-org Sydent
Timeline
PublishedApr 15
Latest updateApr 16

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LExploitability: 2.8 | Impact: 1.4

Affected Packages2 packages

▶NVDmatrix/sydent< 2.3.0
▶CVEListV5matrix-org/sydent2.2.0

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
GHSA
Sydent DoS (via resource exhaustion) due to improper input validation↗2021-04-16
▶
OSV
Sydent DoS (via resource exhaustion) due to improper input validation↗2021-04-16
▶
CVEList
Denial of service (via resource exhaustion) due to improper input validation↗2021-04-15
▶
OSV
CVE-2021-29433: ### Impact Missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk spac↗2021-04-15
▶
CVE-2021-29433 — Improper Input Validation in Sydent | cvebase