In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.
総合評価: CVE-2018-18584 は中リスク(57.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 5.83%、91 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 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 | 2026-05-26 | 6.37% | 5.83% | -0.54% |
| 2 | 2025-12-28 | 5.43% | 6.37% | +0.94% |
| 3 | 2025-12-27 | — | 5.43% | — |
EPSS の全履歴 (全 25 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 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2018-18584: 2 source package rows (cabextract, libmspack); 18 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 18, open 0. | https://security.alpinelinux.org/vuln/CVE-2018-18584 |
debian
|
not yet assigned | CVE-2018-18584 not yet assigned priority: Debian including 2 source packages (cabextract, libmspack), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2018-18584 |
gentoo
|
normal | CVE-2018-18584: 1 GLSA(s) (201903-20), 2 atom(s) (app-arch/cabextract, dev-libs/libmspack); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-18584 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-18584 |
ubuntu
|
medium | CVE-2018-18584 medium priority: Ubuntu including 3 source packages (cabextract, clamav, libmspack), 36 status rows across 12 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): not-affected 27, released 7, needs-triage 2. | https://ubuntu.com/security/CVE-2018-18584 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cabextract_project | cabextract | < 1.8 | cpe:2.3:a:cabextract_project:cabextract:*:*:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.3 | cpe:2.3:a:libmspack_project:libmspack:0.3:alpha:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.4 | cpe:2.3:a:libmspack_project:libmspack:0.4:alpha:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.5 | cpe:2.3:a:libmspack_project:libmspack:0.5:alpha:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.6 | cpe:2.3:a:libmspack_project:libmspack:0.6:alpha:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.7 | cpe:2.3:a:libmspack_project:libmspack:0.7:alpha:*:*:*:*:*:* |
| libmspack_project | libmspack | 0.7.1 | cpe:2.3:a:libmspack_project:libmspack:0.7.1:alpha:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* |
| 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:*:*:* |
| canonical | ubuntu_linux | 18.10 | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
| suse | linux_enterprise_server | 11 | cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:* |
| suse | linux_enterprise_server | 12 | cpe:2.3:o:suse:linux_enterprise_server:12:ga:*:*:ltss:*:*:* |
| suse | linux_enterprise_server | 12 | cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:ltss:*:*:* |
| suse | linux_enterprise_server | 12 | cpe:2.3:o:suse:linux_enterprise_server:12:sp2:*:*:ltss:*:*:* |
| starwindsoftware | starwind_virtual_san | — | cpe:2.3:a:starwindsoftware:starwind_virtual_san:-:*:*:*:*:vsphere:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:2049 | Third Party Advisory |
| https://bugs.debian.org/911640 | Mailing List Third Party Advisory |
| https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/201903-20 | Third Party Advisory |
| https://usn.ubuntu.com/3814-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3814-2/ | Third Party Advisory |
| https://usn.ubuntu.com/3814-3/ | Third Party Advisory |
| https://www.cabextract.org.uk/#changes | Product Vendor Advisory |
| https://www.openwall.com/lists/oss-security/2018/10/22/1 | Mailing List Third Party Advisory |
| https://www.starwindsoftware.com/security/sw-20181213-0001/ | Third Party Advisory |