CVE-2021-29433

NameCVE-2021-29433
DescriptionSydent 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
matrix-sydent (PTS)sid2.5.1-1.1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
matrix-sydentsource(unstable)(not affected)

Notes

- matrix-sydent <not-affected> (Fixed before initial upload to Debian)
https://github.com/matrix-org/sydent/security/advisories/GHSA-pw4v-gr34-2553

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