A flaw in DRBG number generation within the Network Security Services (NSS) library where the internal state V does not correctly carry bits over. The NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated with NSS version 3.28.4. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
総合評価: CVE-2017-5462 は中リスク（48.1/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.07%、77 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 | 2025-11-21 | 1.18% | 1.07% | -0.10% |
| 2 | 2025-11-18 | 1.11% | 1.18% | +0.06% |
| 3 | 2025-03-30 | — | 1.11% | — |
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 |
|---|---|---|---|---|---|---|
| 5.3 | 3.0 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2017-5462 not yet assigned priority: Debian including 3 source packages (firefox, firefox-esr, nss), 11 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11. | https://security-tracker.debian.org/tracker/CVE-2017-5462 |
gentoo
|
high | CVE-2017-5462: 2 GLSA(s) (201705-04, 201802-03), 3 atom(s) (dev-libs/nss, www-client/firefox, www-client/firefox-bin); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-5462 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2017-5462 |
suse
|
medium | CVE-2017-5462 severity moderate: SUSE including 161 source package names (MozillaFirefox, MozillaFirefox-102.11.0-150200.152.87.1, …), 539 product×package rows across 86 product lines (Image SLES12-SP5-Azure-BYOS, Image SLES12-SP5-Azure-Basic-On-Demand, … (86 product lines)): Fixed 505, Known Not Affected 34. | https://www.suse.com/security/cve/CVE-2017-5462/ |
ubuntu
|
medium | CVE-2017-5462 medium priority: Ubuntu including 3 source packages (firefox, nss, thunderbird), 18 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 15, ignored 3. | https://ubuntu.com/security/CVE-2017-5462 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| mozilla | firefox | < 45.9.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | < 53.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | firefox | 52.0 | cpe:2.3:a:mozilla:firefox:52.0:*:*:*:*:*:*:* |
| mozilla | network_security_services | < 3.28.4 | cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* |
| mozilla | thunderbird | < 52.1.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.securityfocus.com/bid/97940 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1038320 | Third Party Advisory VDB Entry |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1345089 | Issue Tracking |
| https://security.gentoo.org/glsa/201705-04 | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-3831 | Third Party Advisory |
| https://www.debian.org/security/2017/dsa-3872 | Third Party Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-10/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-11/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-12/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2017-13/ | Vendor Advisory |