CVE-2011-1011

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier, and Fedora 14 and earlier, mounts a new directory on top of /tmp without assigning root ownership and the sticky bit to this new directory, which allows local users to replace or delete arbitrary /tmp files, and consequently cause a denial of service or possibly gain privileges, by running a setuid application that relies on /tmp, as demonstrated by the ksu application.

公開： 2011-02-24 最終更新： 2026-06-16 Assigner： [email protected] ソース： [email protected]
NVD ステータス：Modified，CVE の状態： published
参照： NVD, CVE.org, EUVD, JVN

CVE-2011-1011 は低リスク（37.9/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.37%、28 パーセンタイル） 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。

CVE-2011-1011 の EPSS（Exploit Prediction Scoring System）スコア

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 0.04% 0.37% +0.32%
2 2023-03-07 1.55% 0.04% -1.50%
3 2022-02-04 — 1.55% —

EPSS の全履歴 （全 3 件）

CVE-2011-1011 の CVSS（Common Vulnerability Scoring System）指標

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
6.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C クリックして展開
アクセス経路 (AV:L)
対象ホストにログインするなど、ローカルからの操作が前提。
アクセスの複雑さ (AC:M)
多少の有利条件は要るが、極端なレアケースではない。
認証 (AU:N)
認証を経ずに攻撃を完結できる。
機密性への影響 (C:C)
機密性は全面的に損なわれる。
完全性への影響 (I:C)
完全性は全面的に損なわれる。
可用性への影響 (A:C)
可用性は全面的に損なわれる。
 3.4 10.0 [email protected]

CVE-2011-1011 の弱点分類（列挙）

CVE-2011-1011 の OS トラッカー

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2011-1011
ubuntu low CVE-2011-1011 low priority: Ubuntu including 1 source packages (policycoreutils), 23 status rows across 23 suites (artful, bionic, cosmic, dapper, disco, hardy, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 18, not-affected 4, released 1. https://ubuntu.com/security/CVE-2011-1011

CVE-2011-1011 の影響を受けるソフトウェア／構成

ベンダー 製品 バージョン 生の CPE
redhat policycoreutils <= 2.0.83 cpe:2.3:a:redhat:policycoreutils:*:*:*:*:*:*:*:*
redhat policycoreutils 1.0 cpe:2.3:a:redhat:policycoreutils:1.0:*:*:*:*:*:*:*
redhat policycoreutils 1.1 cpe:2.3:a:redhat:policycoreutils:1.1:*:*:*:*:*:*:*
redhat policycoreutils 1.2 cpe:2.3:a:redhat:policycoreutils:1.2:*:*:*:*:*:*:*
redhat policycoreutils 1.4 cpe:2.3:a:redhat:policycoreutils:1.4:*:*:*:*:*:*:*
redhat policycoreutils 1.6 cpe:2.3:a:redhat:policycoreutils:1.6:*:*:*:*:*:*:*
redhat policycoreutils 1.8 cpe:2.3:a:redhat:policycoreutils:1.8:*:*:*:*:*:*:*
redhat policycoreutils 1.10 cpe:2.3:a:redhat:policycoreutils:1.10:*:*:*:*:*:*:*
redhat policycoreutils 1.12 cpe:2.3:a:redhat:policycoreutils:1.12:*:*:*:*:*:*:*
redhat policycoreutils 1.14 cpe:2.3:a:redhat:policycoreutils:1.14:*:*:*:*:*:*:*
redhat policycoreutils 1.16 cpe:2.3:a:redhat:policycoreutils:1.16:*:*:*:*:*:*:*
redhat policycoreutils 1.18 cpe:2.3:a:redhat:policycoreutils:1.18:*:*:*:*:*:*:*
redhat policycoreutils 1.20 cpe:2.3:a:redhat:policycoreutils:1.20:*:*:*:*:*:*:*
redhat policycoreutils 1.21.1 cpe:2.3:a:redhat:policycoreutils:1.21.1:*:*:*:*:*:*:*
redhat policycoreutils 1.21.2 cpe:2.3:a:redhat:policycoreutils:1.21.2:*:*:*:*:*:*:*
redhat policycoreutils 1.21.3 cpe:2.3:a:redhat:policycoreutils:1.21.3:*:*:*:*:*:*:*
redhat policycoreutils 1.21.4 cpe:2.3:a:redhat:policycoreutils:1.21.4:*:*:*:*:*:*:*
redhat policycoreutils 1.21.5 cpe:2.3:a:redhat:policycoreutils:1.21.5:*:*:*:*:*:*:*
redhat policycoreutils 1.21.6 cpe:2.3:a:redhat:policycoreutils:1.21.6:*:*:*:*:*:*:*
redhat policycoreutils 1.21.7 cpe:2.3:a:redhat:policycoreutils:1.21.7:*:*:*:*:*:*:*
redhat policycoreutils 1.21.8 cpe:2.3:a:redhat:policycoreutils:1.21.8:*:*:*:*:*:*:*
redhat policycoreutils 1.21.9 cpe:2.3:a:redhat:policycoreutils:1.21.9:*:*:*:*:*:*:*
redhat policycoreutils 1.21.10 cpe:2.3:a:redhat:policycoreutils:1.21.10:*:*:*:*:*:*:*
redhat policycoreutils 1.21.11 cpe:2.3:a:redhat:policycoreutils:1.21.11:*:*:*:*:*:*:*
redhat policycoreutils 1.21.12 cpe:2.3:a:redhat:policycoreutils:1.21.12:*:*:*:*:*:*:*
redhat policycoreutils 1.21.13 cpe:2.3:a:redhat:policycoreutils:1.21.13:*:*:*:*:*:*:*
redhat policycoreutils 1.21.14 cpe:2.3:a:redhat:policycoreutils:1.21.14:*:*:*:*:*:*:*
redhat policycoreutils 1.21.15 cpe:2.3:a:redhat:policycoreutils:1.21.15:*:*:*:*:*:*:*
redhat policycoreutils 1.21.16 cpe:2.3:a:redhat:policycoreutils:1.21.16:*:*:*:*:*:*:*
redhat policycoreutils 1.21.17 cpe:2.3:a:redhat:policycoreutils:1.21.17:*:*:*:*:*:*:*
redhat policycoreutils 1.21.18 cpe:2.3:a:redhat:policycoreutils:1.21.18:*:*:*:*:*:*:*
redhat policycoreutils 1.21.19 cpe:2.3:a:redhat:policycoreutils:1.21.19:*:*:*:*:*:*:*
redhat policycoreutils 1.21.20 cpe:2.3:a:redhat:policycoreutils:1.21.20:*:*:*:*:*:*:*
redhat policycoreutils 1.21.21 cpe:2.3:a:redhat:policycoreutils:1.21.21:*:*:*:*:*:*:*
redhat policycoreutils 1.21.22 cpe:2.3:a:redhat:policycoreutils:1.21.22:*:*:*:*:*:*:*
redhat policycoreutils 1.22 cpe:2.3:a:redhat:policycoreutils:1.22:*:*:*:*:*:*:*
redhat policycoreutils 1.23.1 cpe:2.3:a:redhat:policycoreutils:1.23.1:*:*:*:*:*:*:*
redhat policycoreutils 1.23.2 cpe:2.3:a:redhat:policycoreutils:1.23.2:*:*:*:*:*:*:*
redhat policycoreutils 1.23.3 cpe:2.3:a:redhat:policycoreutils:1.23.3:*:*:*:*:*:*:*
redhat policycoreutils 1.23.4 cpe:2.3:a:redhat:policycoreutils:1.23.4:*:*:*:*:*:*:*
redhat policycoreutils 1.23.5 cpe:2.3:a:redhat:policycoreutils:1.23.5:*:*:*:*:*:*:*
redhat policycoreutils 1.23.6 cpe:2.3:a:redhat:policycoreutils:1.23.6:*:*:*:*:*:*:*
redhat policycoreutils 1.23.7 cpe:2.3:a:redhat:policycoreutils:1.23.7:*:*:*:*:*:*:*
redhat policycoreutils 1.23.8 cpe:2.3:a:redhat:policycoreutils:1.23.8:*:*:*:*:*:*:*
redhat policycoreutils 1.23.9 cpe:2.3:a:redhat:policycoreutils:1.23.9:*:*:*:*:*:*:*
redhat policycoreutils 1.23.10 cpe:2.3:a:redhat:policycoreutils:1.23.10:*:*:*:*:*:*:*
redhat policycoreutils 1.23.11 cpe:2.3:a:redhat:policycoreutils:1.23.11:*:*:*:*:*:*:*
redhat policycoreutils 1.24 cpe:2.3:a:redhat:policycoreutils:1.24:*:*:*:*:*:*:*
redhat policycoreutils 1.25.1 cpe:2.3:a:redhat:policycoreutils:1.25.1:*:*:*:*:*:*:*
redhat policycoreutils 1.25.2 cpe:2.3:a:redhat:policycoreutils:1.25.2:*:*:*:*:*:*:*
redhat policycoreutils 1.25.3 cpe:2.3:a:redhat:policycoreutils:1.25.3:*:*:*:*:*:*:*
redhat policycoreutils 1.25.4 cpe:2.3:a:redhat:policycoreutils:1.25.4:*:*:*:*:*:*:*
redhat policycoreutils 1.25.5 cpe:2.3:a:redhat:policycoreutils:1.25.5:*:*:*:*:*:*:*
redhat policycoreutils 1.25.6 cpe:2.3:a:redhat:policycoreutils:1.25.6:*:*:*:*:*:*:*
redhat policycoreutils 1.25.7 cpe:2.3:a:redhat:policycoreutils:1.25.7:*:*:*:*:*:*:*
redhat policycoreutils 1.25.8 cpe:2.3:a:redhat:policycoreutils:1.25.8:*:*:*:*:*:*:*
redhat policycoreutils 1.25.9 cpe:2.3:a:redhat:policycoreutils:1.25.9:*:*:*:*:*:*:*
redhat policycoreutils 1.26 cpe:2.3:a:redhat:policycoreutils:1.26:*:*:*:*:*:*:*
redhat policycoreutils 1.27.1 cpe:2.3:a:redhat:policycoreutils:1.27.1:*:*:*:*:*:*:*
redhat policycoreutils 1.27.2 cpe:2.3:a:redhat:policycoreutils:1.27.2:*:*:*:*:*:*:*
redhat policycoreutils 1.27.3 cpe:2.3:a:redhat:policycoreutils:1.27.3:*:*:*:*:*:*:*
redhat policycoreutils 1.27.4 cpe:2.3:a:redhat:policycoreutils:1.27.4:*:*:*:*:*:*:*
redhat policycoreutils 1.27.5 cpe:2.3:a:redhat:policycoreutils:1.27.5:*:*:*:*:*:*:*
redhat policycoreutils 1.27.6 cpe:2.3:a:redhat:policycoreutils:1.27.6:*:*:*:*:*:*:*
redhat policycoreutils 1.27.7 cpe:2.3:a:redhat:policycoreutils:1.27.7:*:*:*:*:*:*:*
redhat policycoreutils 1.27.8 cpe:2.3:a:redhat:policycoreutils:1.27.8:*:*:*:*:*:*:*
redhat policycoreutils 1.27.9 cpe:2.3:a:redhat:policycoreutils:1.27.9:*:*:*:*:*:*:*
redhat policycoreutils 1.27.10 cpe:2.3:a:redhat:policycoreutils:1.27.10:*:*:*:*:*:*:*
redhat policycoreutils 1.27.11 cpe:2.3:a:redhat:policycoreutils:1.27.11:*:*:*:*:*:*:*
redhat policycoreutils 1.27.12 cpe:2.3:a:redhat:policycoreutils:1.27.12:*:*:*:*:*:*:*
redhat policycoreutils 1.27.13 cpe:2.3:a:redhat:policycoreutils:1.27.13:*:*:*:*:*:*:*
redhat policycoreutils 1.27.14 cpe:2.3:a:redhat:policycoreutils:1.27.14:*:*:*:*:*:*:*
redhat policycoreutils 1.27.15 cpe:2.3:a:redhat:policycoreutils:1.27.15:*:*:*:*:*:*:*
redhat policycoreutils 1.27.16 cpe:2.3:a:redhat:policycoreutils:1.27.16:*:*:*:*:*:*:*
redhat policycoreutils 1.27.17 cpe:2.3:a:redhat:policycoreutils:1.27.17:*:*:*:*:*:*:*
redhat policycoreutils 1.27.18 cpe:2.3:a:redhat:policycoreutils:1.27.18:*:*:*:*:*:*:*
redhat policycoreutils 1.27.19 cpe:2.3:a:redhat:policycoreutils:1.27.19:*:*:*:*:*:*:*
redhat policycoreutils 1.27.20 cpe:2.3:a:redhat:policycoreutils:1.27.20:*:*:*:*:*:*:*
redhat policycoreutils 1.27.21 cpe:2.3:a:redhat:policycoreutils:1.27.21:*:*:*:*:*:*:*
redhat policycoreutils 1.27.22 cpe:2.3:a:redhat:policycoreutils:1.27.22:*:*:*:*:*:*:*

CVE-2011-1011 の参考情報

URL タグ
http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html
http://openwall.com/lists/oss-security/2011/02/23/1
http://openwall.com/lists/oss-security/2011/02/23/2
http://pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197
http://secunia.com/advisories/43415 Vendor Advisory
http://secunia.com/advisories/43844
http://secunia.com/advisories/44034
http://www.redhat.com/support/errata/RHSA-2011-0414.html
http://www.securityfocus.com/bid/46510
http://www.securitytracker.com/id?1025291
http://www.vupen.com/english/advisories/2011/0701
http://www.vupen.com/english/advisories/2011/0864
https://bugzilla.redhat.com/show_bug.cgi?id=633544 Patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/65641
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