Vulnerability Name:

CVE-2011-1011 (CCN-65641)

Assigned:2011-02-22
Published:2011-02-22
Updated:2023-02-13
Summary: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.
CVSS v3 Severity:5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
6.0 Medium (Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
3.3 Low (CCN CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:P/A:P)
2.9 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:N/I:P/A:P/E:H/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): Partial
6.9 Medium (REDHAT CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
6.0 Medium (REDHAT Temporal CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C/E:H/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Consequences:File Manipulation
References:Source: CCN
Type: Full-Disclosure Mailing List, Tue Feb 22 2011
Developers should not rely on the stickiness of /tmp on Red Hat Linux

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: MITRE
Type: CNA
CVE-2011-1011

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: RHSA-2011-0414
Important: policycoreutils security update

Source: CCN
Type: SA43415
policycoreutils seunshare Temporary Directory Security Bypass Weakness

Source: CCN
Type: SELinux Web site
policycoreutils

Source: CCN
Type: OSVDB ID: 72541
Red Hat Linux policycoreutils seunshare sandbox/seunshare.c seunshare_mount Function /tmp Sticky Bit Manipulation Local Privilege Escalation

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: BID-46510
policycoreutils 'seunshare' Insecure Temporary Directory Creation Vulnerability

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Red Hat Bugzilla Bug 633544
CVE-2011-1011 policycoreutils: insecure temporary directory handling in seunshare

Source: secalert@redhat.com
Type: Patch
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
policycoreutils-seunshare-symlink(65641)

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*
  • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::client:*:*:*:*:*
  • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:6::computenode:*:*:*:*:*
  • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*
  • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:6::workstation:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:23059
    P
    ELSA-2011:0414: policycoreutils security update (Important)
    2014-05-26
    oval:org.mitre.oval:def:21423
    P
    RHSA-2011:0414: policycoreutils security update (Important)
    2014-02-24
    oval:com.redhat.rhsa:def:20110414
    P
    RHSA-2011:0414: policycoreutils security update (Important)
    2011-04-04
    oval:com.ubuntu.xenial:def:201110110000000
    V
    CVE-2011-1011 on Ubuntu 16.04 LTS (xenial) - low.
    2011-02-24
    oval:com.ubuntu.precise:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 12.04 LTS (precise) - low.
    2011-02-24
    oval:com.ubuntu.artful:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 17.10 (artful) - low.
    2011-02-24
    oval:com.ubuntu.disco:def:201110110000000
    V
    CVE-2011-1011 on Ubuntu 19.04 (disco) - low.
    2011-02-24
    oval:com.ubuntu.trusty:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 14.04 LTS (trusty) - low.
    2011-02-24
    oval:com.ubuntu.cosmic:def:201110110000000
    V
    CVE-2011-1011 on Ubuntu 18.10 (cosmic) - low.
    2011-02-24
    oval:com.ubuntu.bionic:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 18.04 LTS (bionic) - low.
    2011-02-24
    oval:com.ubuntu.xenial:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 16.04 LTS (xenial) - low.
    2011-02-24
    oval:com.ubuntu.bionic:def:201110110000000
    V
    CVE-2011-1011 on Ubuntu 18.04 LTS (bionic) - low.
    2011-02-24
    oval:com.ubuntu.cosmic:def:20111011000
    V
    CVE-2011-1011 on Ubuntu 18.10 (cosmic) - low.
    2011-02-24
    BACK