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Privileges Required
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CVE-2014-5206

Disclosure Date: August 18, 2014
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Description

The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a “mount -o remount” command within a user namespace.

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CVSS V3 Severity and Metrics
Base Score:
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Impact Score:
Unknown
Exploitability Score:
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Vector:
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Attack Vector (AV):
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Attack Complexity (AC):
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Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
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Confidentiality (C):
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Integrity (I):
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Availability (A):
Unknown

General Information

Vendors

  • canonical,
  • linux

Products

  • linux kernel,
  • ubuntu linux 12.04,
  • ubuntu linux 14.04
Technical Analysis