GHSA-rv6r-3f5q-9rgx · 深刻度： high · エコシステム： pip — Twisted SSH client and server deny of service during SSH handshake.
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.
総合評価: CVE-2022-21716 は悪用リスクが高い（75.7/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 3.61%、88 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 3.67% | 3.61% | -0.06% |
| 2 | 2026-05-30 | 1.24% | 3.67% | +2.43% |
| 3 | 2026-04-14 | — | 1.24% | — |
EPSS の全履歴 （全 33 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
GHSA-rv6r-3f5q-9rgx · 深刻度： high · エコシステム： pip — Twisted SSH client and server deny of service during SSH handshake.
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2022-21716: 1 source package rows (py3-twisted); 7 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 0. | https://security.alpinelinux.org/vuln/CVE-2022-21716 |
debian
|
not yet assigned | CVE-2022-21716 not yet assigned priority: Debian including 1 source packages (twisted), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-21716 |
gentoo
|
low | CVE-2022-21716: 1 GLSA(s) (202301-02), 1 atom(s) (dev-python/twisted); latest impact low. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-21716 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2022-21716 |
suse
|
high | CVE-2022-21716 severity important: SUSE including 27 source package names (python-Twisted-15.2.1-9.17.1, python-Twisted-doc-19.10.0-150200.3.12.1, …), 58 product×package rows across 34 product lines (HPE Helion OpenStack 8, Image SLES15-SP3-BYOS-Azure, … (34 product lines)): Fixed 58. | https://www.suse.com/security/cve/CVE-2022-21716/ |
ubuntu
|
medium | CVE-2022-21716 medium priority: Ubuntu including 1 source packages (twisted), 7 status rows across 7 suites (bionic, focal, impish, jammy, trusty, upstream, xenial): released 7. | https://ubuntu.com/security/CVE-2022-21716 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| twisted | twisted | >= 21.7.0, < 22.2.0 | cpe:2.3:a:twisted:twisted:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| oracle | http_server | 12.2.1.3.0 | cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:* |
| oracle | http_server | 12.2.1.4.0 | cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:* |
| oracle | zfs_storage_appliance_kit | 8.8 | cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:* |
| fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| fedoraproject | fedora | 36 | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9 | Patch Third Party Advisory |
| https://github.com/twisted/twisted/releases/tag/twisted-22.2.0 | Release Notes Third Party Advisory |
| https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx | Exploit Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/ | |
| https://security.gentoo.org/glsa/202301-02 | Third Party Advisory |
| https://twistedmatrix.com/trac/ticket/10284 | Issue Tracking Vendor Advisory |
| https://www.oracle.com/security-alerts/cpuapr2022.html | Patch Third Party Advisory |