GHSA-7xw9-w465-6x42 · 深刻度： critical — This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is...
This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.
総合評価: CVE-2023-38545 は高リスク（79/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 78.48%、100 パーセンタイル） 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 直近 1 日で EPSS が +52.23% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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 | 26.25% | 78.48% | +52.23% |
| 2 | 2026-06-09 | 26.75% | 26.25% | -0.50% |
| 3 | 2026-05-27 | — | 26.75% | — |
EPSS の全履歴 （全 65 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-7xw9-w465-6x42 · 深刻度： critical — This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is...
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2023-38545: 1 source package rows (curl); 7 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 0. | https://security.alpinelinux.org/vuln/CVE-2023-38545 |
debian
|
not yet assigned | CVE-2023-38545 not yet assigned priority: Debian including 1 source packages (curl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2023-38545 |
gentoo
|
high | CVE-2023-38545: 1 GLSA(s) (202310-12), 1 atom(s) (net-misc/curl); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-38545 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2023-38545 |
suse
|
high | CVE-2023-38545 severity important: SUSE including 335 source package names (1.2.3-2.2.19:libcurl4-8.0.1-150400.5.32.1, 1.2.3-3.2.19:libcurl4-8.0.1-150400.5.32.1, …), 780 product×package rows across 229 product lines (Container bci/bci-init, Container bci/golang, … (229 product lines)): Fixed 501, Known Affected 186, Known Not Affected 93. | https://www.suse.com/security/cve/CVE-2023-38545/ |
ubuntu
|
high | CVE-2023-38545 high priority: Ubuntu including 1 source packages (curl), 9 status rows across 9 suites (bionic, focal, jammy, lunar, mantic, noble, trusty, upstream, xenial): not-affected 4, released 4, needs-triage 1. | https://ubuntu.com/security/CVE-2023-38545 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| haxx | libcurl | >= 7.69.0, < 8.4.0 | cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* |
| 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:-:*:*:*:*:*:*:* |
| microsoft | windows_10_1809 | < 10.0.17763.5122 | cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:* |
| microsoft | windows_10_21h2 | < 10.0.19044.3693 | cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* |
| microsoft | windows_10_22h2 | < 10.0.19045.3693 | cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_21h2 | < 10.0.22000.2600 | cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_22h2 | < 10.0.22621.2715 | cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* |
| microsoft | windows_11_23h2 | < 10.0.22631.2715 | cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2019 | < 10.0.17763.5122 | cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* |
| microsoft | windows_server_2022 | < 10.0.20348.2113 | cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* |