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CVE-2016-2853

Date: May 2, 2016

The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

Severity Score

Related Resources (8)

http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/
http://www.openwall.com/lists/oss-security/2021/10/18/1
http://www.securityfocus.com/bid/96839
https://sourceforge.net/p/aufs/mailman/message/34864744/
https://nvd.nist.gov/vuln/detail/CVE-2016-2853
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-2853
http://www.openwall.com/lists/oss-security/2016/02/24/9
https://www.mend.io/vulnerability-database/CVE-2016-2853

Severity Score

Weakness Type (CWE)

Improper Privilege Management

CWE-269

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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