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CVE
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CVE-2016-1576Date: (C)2016-06-02   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
http://www.openwall.com/lists/oss-security/2016/02/24/8
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
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1576.html
http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/
https://bugs.launchpad.net/bugs/1535150
https://launchpadlibrarian.net/235300093/0005-overlayfs-Be-more-careful-about-copying-up-sxid-file.patch
https://launchpadlibrarian.net/235300225/0006-overlayfs-Propogate-nosuid-from-lower-and-upper-moun.patch

CPE    8
cpe:/o:canonical:ubuntu_touch:15.04
cpe:/o:canonical:ubuntu_core:15.04
cpe:/o:canonical:ubuntu_linux:16.10
cpe:/o:canonical:ubuntu_linux:15.10
...
OVAL    11
oval:org.secpod.oval:def:702991
oval:org.secpod.oval:def:702982
oval:org.secpod.oval:def:702990
oval:org.secpod.oval:def:52711
...

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