An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.
総合評価: CVE-2020-1763 は中リスク(58/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 3.29%、87 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 | 5.68% | 3.29% | -2.39% |
| 2 | 2026-06-02 | 4.75% | 5.68% | +0.93% |
| 3 | 2025-11-21 | — | 4.75% | — |
EPSS の全履歴 (全 17 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] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2020-1763: 1 source package rows (libreswan); 11 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 4. | https://security.alpinelinux.org/vuln/CVE-2020-1763 |
debian
|
not yet assigned | CVE-2020-1763 not yet assigned priority: Debian including 1 source packages (libreswan), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2020-1763 |
gentoo
|
normal | CVE-2020-1763: 1 GLSA(s) (202007-21), 1 atom(s) (net-vpn/libreswan); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-1763 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2020-1763 |
ubuntu
|
medium | CVE-2020-1763 medium priority: Ubuntu including 1 source packages (libreswan), 17 status rows across 17 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 11, needs-triage 3, DNE 2, ignored 1. | https://ubuntu.com/security/CVE-2020-1763 |
| URL | タグ |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1813329 | Issue Tracking Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763 | Issue Tracking Third Party Advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf | Third Party Advisory |
| https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8 | Patch Third Party Advisory |
| https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt | Patch Vendor Advisory |
| https://security.gentoo.org/glsa/202007-21 | Third Party Advisory |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 | Third Party Advisory US Government Resource |
| https://www.debian.org/security/2020/dsa-4684 | Third Party Advisory |