GHSA-jhjh-776m-4765 · 深刻度: high · エコシステム: pip — Denial of service due to incorrect application of event authorization rules
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix specification specifies a list of [event authorization rules](https://spec.matrix.org/v1.2/rooms/v9/#authorization-rules) which must be checked when determining if an event should be accepted into a room. In versions of Synapse up to and including version 1.61.0, some of these rules are not correctly applied. An attacker could craft events which would be accepted by Synapse but not a spec-conformant server, potentially causing divergence in the room state between servers. Administrators of homeservers with federation enabled are advised to upgrade to version 1.62.0 or higher. Federation can be disabled by setting [`federation_domain_whitelist`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#federation_domain_whitelist) to an empty list (`[]`) as a workaround.
総合評価: CVE-2022-31152 は中リスク(45/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.90%、55 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.69% | 0.90% | +0.21% |
| 2 | 2025-09-04 | 0.53% | 0.69% | +0.16% |
| 3 | 2025-09-03 | — | 0.53% | — |
EPSS の全履歴 (全 10 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.4 | 3.1 | MEDIUM |
|
1.6 | 4.7 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-jhjh-776m-4765 · 深刻度: high · エコシステム: pip — Denial of service due to incorrect application of event authorization rules
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2022-31152: 1 source package rows (synapse); 16 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 16. | https://security.alpinelinux.org/vuln/CVE-2022-31152 |
debian
|
not yet assigned | CVE-2022-31152 not yet assigned priority: Debian including 1 source packages (matrix-synapse), 2 status rows across 2 suites (forky, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2022-31152 |
ubuntu
|
medium | CVE-2022-31152 medium priority: Ubuntu including 1 source packages (matrix-synapse), 11 status rows across 11 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): not-affected 5, needs-triage 3, ignored 2, released 1. | https://ubuntu.com/security/CVE-2022-31152 |
| URL | タグ |
|---|---|
| https://github.com/matrix-org/synapse/pull/13087 | Issue Tracking Patch Third Party Advisory |
| https://github.com/matrix-org/synapse/pull/13088 | Issue Tracking Patch Third Party Advisory |
| https://github.com/matrix-org/synapse/releases/tag/v1.62.0 | Release Notes Third Party Advisory |
| https://github.com/matrix-org/synapse/security/advisories/GHSA-jhjh-776m-4765 | Issue Tracking Mitigation Third Party Advisory |