Vulnerability Name:

CVE-2016-1575 (CCN-114464)

Assigned:2016-02-24
Published:2016-02-24
Updated:2022-04-18
Summary: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 v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-269
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2016-1575

Source: CCN
Type: Linux Kernel GIT Repository
Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

Source: MISC
Type: Patch, Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9f57ebcba563e0cd532926cab83c92bb4d79360

Source: CONFIRM
Type: Third Party Advisory
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-1575.html

Source: MISC
Type: Exploit, Third Party Advisory
http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20160224 User Namespaces Overlayfs Xattr Setgid Privilege Escalation: Overlayfs

Source: CCN
Type: oss-sec Mailing List, Wed, 24 Feb 2016 06:03:35 +0000
Overlayfs over Fuse Privilege Escalation in USERNS

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20211018 Re: CVE-2021-3847: OverlayFS - Potential Privilege Escalation using overlays copy_up

Source: XF
Type: UNKNOWN
linux-kernel-cve20161575-priv-esc(114464)

Source: CONFIRM
Type: Third Party Advisory
https://launchpad.net/bugs/1534961

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.5.2)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_touch:15.04:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_core:15.04:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20161575000
    V
    		CVE-2016-1575 on Ubuntu 12.04 LTS (precise) - medium.
    2016-05-02
    oval:com.ubuntu.trusty:def:20161575000
    V
    		CVE-2016-1575 on Ubuntu 14.04 LTS (trusty) - medium.
    2016-05-02
    oval:com.ubuntu.xenial:def:20161575000
    V
    		CVE-2016-1575 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-05-02
    oval:com.ubuntu.xenial:def:201615750000000
    V
    		CVE-2016-1575 on Ubuntu 16.04 LTS (xenial) - medium.
    2016-05-02
    BACK
    linux linux kernel *
    canonical ubuntu touch 15.04
    canonical ubuntu linux 15.10
    canonical ubuntu linux 16.04
    canonical ubuntu linux 16.10
    canonical ubuntu linux 12.04
    canonical ubuntu linux 14.04
    canonical ubuntu core 15.04