A flaw was found in shadow-utils. When asking for a new password, shadow-utils asks the password twice. If the password fails on the second attempt, shadow-utils fails in cleaning the buffer used to store the first entry. This may allow an attacker with enough access to retrieve the password from the memory.
総合評価: CVE-2023-4641 は低リスク（24.9/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.26%、17 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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 | 2026-06-15 | 0.02% | 0.26% | +0.24% |
| 2 | 2025-11-21 | 0.07% | 0.02% | -0.05% |
| 3 | 2025-11-18 | — | 0.07% | — |
EPSS の全履歴 （全 8 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 |
|---|---|---|---|---|---|---|
| 4.7 | 3.1 | MEDIUM |
|
1.0 | 3.6 | [email protected] |
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2023-4641 not yet assigned priority: Debian including 1 source packages (shadow), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2023-4641 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2023-4641 |
suse
|
low | CVE-2023-4641 severity low: SUSE including 352 source package names (1.1.2-2.10:libsubid5-4.17.2-150600.17.18.1, 1.1.2-2.10:login_defs-4.17.2-150600.17.18.1, …), 766 product×package rows across 266 product lines (Container bci/bci-init, Container bci/bci-sle15-kernel-module-devel, … (266 product lines)): Fixed 586, Known Affected 180. | https://www.suse.com/security/cve/CVE-2023-4641/ |
ubuntu
|
low | CVE-2023-4641 low priority: Ubuntu including 1 source packages (shadow), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 7, not-affected 4, ignored 1. | https://ubuntu.com/security/CVE-2023-4641 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| shadow-maint | shadow-utils | < 4.14.0 | cpe:2.3:a:shadow-maint:shadow-utils:*:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder | 9.0 | cpe:2.3:a:redhat:codeready_linux_builder:9.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64 | 8.0_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:8.0_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64 | 9.0_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems | 8.0_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems | 9.0_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian | 8.0_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian | 9.0_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 8.0 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 9.0 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 9.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 9.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/errata/RHSA-2023:6632 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2023:7112 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2024:0417 | |
| https://access.redhat.com/errata/RHSA-2024:2577 | |
| https://access.redhat.com/security/cve/CVE-2023-4641 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2215945 | Issue Tracking |
| https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html |