Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.
総合評価: CVE-2016-7970 は中リスク（57.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.31%、79 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 | 2026-01-25 | 1.24% | 1.31% | +0.07% |
| 2 | 2025-03-30 | 1.67% | 1.24% | -0.43% |
| 3 | 2025-03-29 | — | 1.67% | — |
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 |
|---|---|---|---|---|---|---|
| 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-2016-7970: 1 source package rows (libass); 9 state rows across 9 repos (3.10-main, 3.11-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 9, open 0. | https://security.alpinelinux.org/vuln/CVE-2016-7970 |
debian
|
not yet assigned | CVE-2016-7970 not yet assigned priority: Debian including 1 source packages (libass), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-7970 |
gentoo
|
normal | CVE-2016-7970: 1 GLSA(s) (201702-25), 1 atom(s) (media-libs/libass); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-7970 |
suse
|
medium | CVE-2016-7970 severity moderate: SUSE including 18 source package names (libass-devel-0.10.2-3.1, libass-devel-0.13.4-2.1, …), 34 product×package rows across 24 product lines (SUSE Linux Enterprise Desktop 12 SP1, SUSE Linux Enterprise Desktop 12 SP2, … (24 product lines)): Fixed 34. | https://www.suse.com/security/cve/CVE-2016-7970/ |
ubuntu
|
medium | CVE-2016-7970 medium priority: Ubuntu including 1 source packages (libass), 16 status rows across 16 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, precise, trusty, upstream, xenial, yakkety, zesty): not-affected 13, released 2, ignored 1. | https://ubuntu.com/security/CVE-2016-7970 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| fedoraproject | fedora | 23 | cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* |
| fedoraproject | fedora | 24 | cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* |
| fedoraproject | fedora | 25 | cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:* |
| libass_project | libass | <= 0.13.3 | cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2016/10/05/2 | Mailing List Patch Third Party Advisory |
| http://www.securityfocus.com/bid/93358 | Third Party Advisory VDB Entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=1381960 | Issue Tracking Patch |
| https://github.com/libass/libass/pull/240/commits/08e754612019ed84d1db0d1fc4f5798248decd75 | Issue Tracking Patch Third Party Advisory |
| https://github.com/libass/libass/releases/tag/0.13.4 | Patch Release Notes Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/ | |
| https://security.gentoo.org/glsa/201702-25 | Patch Third Party Advisory VDB Entry |