ID CVE-2011-1485
Summary Race condition in the pkexec utility and polkitd daemon in PolicyKit (aka polkit) 0.96 allows local users to gain privileges by executing a setuid program from pkexec, related to the use of the effective user ID instead of the real user ID.
References
Vulnerable Configurations
  • cpe:2.3:a:redhat:policykit:0.96:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:policykit:0.96:*:*:*:*:*:*:*
CVSS
Base: 6.9 (as of 19-12-2012 - 04:39)
Impact:
Exploitability:
CWE CWE-362
CAPEC
  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:L/AC:M/Au:N/C:C/I:C/A:C
redhat via4
advisories
bugzilla
id 692922
title CVE-2011-1485 polkitd/pkexec vulnerability
oval
AND
  • OR
    • comment Red Hat Enterprise Linux 6 Client is installed
      oval oval:com.redhat.rhba:tst:20111656001
    • comment Red Hat Enterprise Linux 6 Server is installed
      oval oval:com.redhat.rhba:tst:20111656002
    • comment Red Hat Enterprise Linux 6 Workstation is installed
      oval oval:com.redhat.rhba:tst:20111656003
    • comment Red Hat Enterprise Linux 6 ComputeNode is installed
      oval oval:com.redhat.rhba:tst:20111656004
  • OR
    • AND
      • comment polkit is earlier than 0:0.96-2.el6_0.1
        oval oval:com.redhat.rhsa:tst:20110455005
      • comment polkit is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110455006
    • AND
      • comment polkit-desktop-policy is earlier than 0:0.96-2.el6_0.1
        oval oval:com.redhat.rhsa:tst:20110455011
      • comment polkit-desktop-policy is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110455012
    • AND
      • comment polkit-devel is earlier than 0:0.96-2.el6_0.1
        oval oval:com.redhat.rhsa:tst:20110455007
      • comment polkit-devel is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110455008
    • AND
      • comment polkit-docs is earlier than 0:0.96-2.el6_0.1
        oval oval:com.redhat.rhsa:tst:20110455009
      • comment polkit-docs is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhsa:tst:20110455010
rhsa
id RHSA-2011:0455
released 2011-04-19
severity Important
title RHSA-2011:0455: polkit security update (Important)
rpms
  • polkit-0:0.96-2.el6_0.1
  • polkit-desktop-policy-0:0.96-2.el6_0.1
  • polkit-devel-0:0.96-2.el6_0.1
  • polkit-docs-0:0.96-2.el6_0.1
refmap via4
confirm https://bugzilla.redhat.com/show_bug.cgi?id=692922
debian DSA-2319
fedora
  • FEDORA-2011-5589
  • FEDORA-2011-5676
gentoo GLSA-201204-06
mandriva MDVSA-2011:086
secunia 48817
sreason 8424
ubuntu USN-1117-1
Last major update 19-12-2012 - 04:39
Published 31-05-2011 - 20:55
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