The ecc_256_modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8803.
総合評価: CVE-2015-8805 は高リスク(66.9/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 1.20%、78 パーセンタイル) 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 | 2025-07-09 | 0.80% | 1.20% | +0.40% |
| 2 | 2025-03-30 | 2.64% | 0.80% | -1.85% |
| 3 | 2025-03-29 | — | 2.64% | — |
EPSS の全履歴 (全 10 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 | 3.0 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2015-8805 not yet assigned priority: Debian including 1 source packages (nettle), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2015-8805 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2015-8805 |
suse
|
medium | CVE-2015-8805 severity moderate: SUSE including 310 source package names (2.78:libhogweed2-2.7.1-9.1, 2.78:libnettle4-2.7.1-9.1, …), 416 product×package rows across 68 product lines (Container caasp/v4/dnsmasq-nanny, Image SLES12-SP5-Azure-BYOS, … (68 product lines)): Fixed 259, Known Affected 157. | https://www.suse.com/security/cve/CVE-2015-8805/ |
ubuntu
|
medium | CVE-2015-8805 medium priority: Ubuntu including 1 source packages (nettle), 8 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): not-affected 4, released 3, ignored 1. | https://ubuntu.com/security/CVE-2015-8805 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| nettle_project | nettle | <= 3.1.1 | cpe:2.3:a:nettle_project:nettle:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |
| opensuse | leap | 42.1 | cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.1 | cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.2 | cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* |