CVE-2015-3246（redhat enterprise linux）の深刻度・悪用状況・対象バージョン
7.4 重要（CVSS 3.x） 悪用確認済み（CISA KEV） EPSS 取得中…
概要
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file state) by causing an error during the modification. NOTE: this issue can be combined with CVE-2015-3245 to gain privileges.
実際の攻撃で悪用されています。 CISA KEV への追加日: 2026-08-26。対象製品を使っている場合は最優先で対策してください。
CISA の要求対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA の要求対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| redhat | enterprise_linux | 5.0 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| opensuse | opensuse | 13.2 |
| libuser_project | libuser | < 0.56.13-8 |
| libuser_project | libuser | ≥ 0.60 かつ < 0.60-7 |
基本情報
- 公開日
- 2015-08-11
- 最終更新
- 2026-10-02
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-264 CWE-367
対策の進め方
- 上の表で、使っている製品とバージョンが対象か確認します。
- ベンダーの公式アドバイザリ（下の参考情報の「Vendor Advisory」「Patch」）で修正版・回避策を確認します。
- 悪用が確認されているため、パッチ適用までの間もアクセス制限・侵害の痕跡確認を検討します。
- 日本語の情報は JVN iPedia で CVE-2015-3246 を検索 できます。
参考情報
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html Broken Link
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html Broken Link
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.html Mailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1482.html Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1483.html Vendor Advisory
- http://www.securityfocus.com/bid/76022 Third Party Advisory
- http://www.securitytracker.com/id/1033040 Third Party Advisory
- https://access.redhat.com/articles/1537873 MitigationVendor Advisory
- https://www.exploit-db.com/exploits/44633/ Third Party AdvisoryVDB Entry
- https://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txt Exploit
- http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html Broken Link
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html Broken Link
- NVD: CVE-2015-3246
- CVE.org: CVE-2015-3246
データ出典: NIST NVD、CISA KEV、FIRST EPSS。翻訳は参考情報で、正確性は原文を優先してください。