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CVE-2016-1576

Date: May 2, 2016

The overlayfs implementation in the Linux kernel through 4.5.2 does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an overlayfs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.

Language: C

Severity Score

Related Resources (11)

https://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patch
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html
http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/
http://www.openwall.com/lists/oss-security/2021/10/18/1
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360
https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patch
https://bugs.launchpad.net/bugs/1535150
https://nvd.nist.gov/vuln/detail/CVE-2016-1576
https://people.canonical.com/~ubuntu-security/cve/CVE-2016-1576
http://www.openwall.com/lists/oss-security/2016/02/24/8
https://www.mend.io/vulnerability-database/CVE-2016-1576

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Insufficient Information

NVD-CWE-noinfo

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): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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