GHSA-grvv-h2f9-7v9c
Suggest an improvement- Source
- https://github.com/advisories/GHSA-grvv-h2f9-7v9c
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/08/GHSA-grvv-h2f9-7v9c/GHSA-grvv-h2f9-7v9c.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-grvv-h2f9-7v9c
- Aliases
- Published
- 2022-08-30T19:54:34Z
- Modified
- 2023-11-08T04:09:57.073105Z
- Severity
-
- 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- gomatrixserverlib and Dendrite vulnerable to incorrect parsing of the event default power level in event auth
- Details
-
Impact
The power level parsing within gomatrixserverlib was failing to parse the
"events_default"key of them.room.power_levelsevent, defaulting the event default power level to zero in all cases.In rooms where the
"events_default"power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers.Patches
gomatrixserverlib contains a fix as of commit
723fd49and Dendrite 0.9.3 has been updated accordingly.Workarounds
Matrix rooms where the
"events_default"power level has not been changed from the default of zero are not vulnerable.For more information
If you have any questions or comments about this advisory, e-mail us at security@matrix.org.
- Database specific
{ "cwe_ids": [ "CWE-863" ], "severity": "MODERATE", "github_reviewed": true, "nvd_published_at": "2022-08-19T21:15:00Z", "github_reviewed_at": "2022-08-30T19:54:34Z" }- References
-
- https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-grvv-h2f9-7v9c
- https://nvd.nist.gov/vuln/detail/CVE-2022-36009
- https://github.com/matrix-org/gomatrixserverlib/commit/723fd495dde835d078b9f2074b6b62c06dea4575
- https://github.com/matrix-org/gomatrixserverlib
- https://matrix.org/docs/guides/moderation/#power-levels
- https://pkg.go.dev/vuln/GO-2022-0952
Affected packages
Go / github.com/matrix-org/dendrite
Package
- Name
- github.com/matrix-org/dendrite
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/matrix-org/dendrite
Go / github.com/matrix-org/gomatrixserverlib
Package
- Name
- github.com/matrix-org/gomatrixserverlib
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/matrix-org/gomatrixserverlib