A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop (U+002E) `.`. Then in a subsequent request, it does not detect the HSTS state and makes a clear text transfer. Because it would store the info IDN encoded but look for it IDN decoded.
総合評価: CVE-2022-43551 は悪用リスクが高い(78.3/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 16.54%、97 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 | 2026-07-01 | 17.01% | 16.54% | -0.47% |
| 2 | 2026-06-15 | 0.04% | 17.01% | +16.97% |
| 3 | 2025-12-27 | — | 0.04% | — |
EPSS の全履歴 (全 13 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 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2022-43551: 1 source package rows (curl); 47 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 40. | https://security.alpinelinux.org/vuln/CVE-2022-43551 |
debian
|
not yet assigned | CVE-2022-43551 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2022-43551 |
gentoo
|
high | CVE-2022-43551: 1 GLSA(s) (202310-12), 1 atom(s) (net-misc/curl); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-43551 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-43551 |
suse
|
medium | CVE-2022-43551 severity moderate: SUSE including 358 source package names (0.58.0.1.147:libcurl4-7.79.1-150400.5.12.1, 0.58.0.17.143:curl-7.79.1-150400.5.12.1, …), 851 product×package rows across 270 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (270 product lines)): Fixed 589, Known Affected 136, Known Not Affected 126. | https://www.suse.com/security/cve/CVE-2022-43551/ |
ubuntu
|
medium | CVE-2022-43551 medium priority: Ubuntu including 1 source packages (curl), 8 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): not-affected 4, released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2022-43551 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| haxx | curl | >= 7.77.0, < 7.87.0 | cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* |
| netapp | oncommand_insight | — | cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* |
| netapp | oncommand_workflow_automation | — | cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* |
| netapp | snapcenter | — | cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* |
| splunk | universal_forwarder | >= 8.2.0, < 8.2.12 | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| splunk | universal_forwarder | >= 9.0.0, < 9.0.6 | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| splunk | universal_forwarder | 9.1.0 | cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://hackerone.com/reports/1755083 | Exploit Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVWZW5CNSJ7UYAF2BGSYAWAEXDJYUBHA/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202310-12 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20230427-0007/ | Third Party Advisory |