In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data after the encoded algorithm OID during PKCS#1 v1.5 signature verification. Similar to the flaw in the same version of strongSwan regarding digestAlgorithm.parameters, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication.
結論預警: CVE-2018-16151 綜合評估為中等風險（57.1/100）：CVSS 技術影響為高級，利用機率（EPSS 1.89%） 強制指令: 梳理受影響資產並納入修補計畫。
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EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.69% | 1.89% | +0.20% |
| 2 | 2025-12-28 | 1.52% | 1.69% | +0.17% |
| 3 | 2025-12-27 | — | 1.52% | — |
完整 EPSS 歷史 （共 21 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2018-16151: 1 source package rows (strongswan); 20 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 10. | https://security.alpinelinux.org/vuln/CVE-2018-16151 |
debian
|
not yet assigned | CVE-2018-16151 not yet assigned priority: Debian including 1 source packages (strongswan), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-16151 |
gentoo
|
normal | CVE-2018-16151: 1 GLSA(s) (201811-16), 1 atom(s) (net-vpn/strongswan); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-16151 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-16151 |
suse
|
medium | CVE-2018-16151 severity moderate: SUSE including 75 source package names (strongswan, strongswan-4.4.0-6.36.12.1, …), 218 product×package rows across 51 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 4, … (51 product lines)): Fixed 169, Known Not Affected 49. | https://www.suse.com/security/cve/CVE-2018-16151/ |
ubuntu
|
medium | CVE-2018-16151 medium priority: Ubuntu including 1 source packages (strongswan), 4 status rows across 4 suites (bionic, trusty, upstream, xenial): released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2018-16151 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| strongswan | strongswan | >= 4.0.0, <= 4.6.4 | cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
| strongswan | strongswan | >= 5.0.0, < 5.7.0 | cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |