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CVE
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CVE-2016-1575Date: (C)2016-06-02   (M)2024-04-19


The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.

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/2016/02/24/7
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-2016-1575.html
http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/
https://launchpad.net/bugs/1534961

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
...
CWE    1
CWE-269
OVAL    11
oval:org.secpod.oval:def:702982
oval:org.secpod.oval:def:702991
oval:org.secpod.oval:def:702990
oval:org.secpod.oval:def:52711
...

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