Vulnerability Name:

CVE-2016-2853 (CCN-112866)

Assigned:2016-02-24
Published:2016-02-24
Updated:2022-04-18
Summary: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.
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)
6.9 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:U/RC:R)
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
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:U/RC:R)
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): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-269
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2016-2853

Source: CCN
Type: oss-sec Mailing List, Wed, 24 Feb 2016 06:14:56 +0000
Aufs Union Filesystem Privilege Escalation In User Namespaces

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

Source: MLIST
Type: Exploit, Mailing List, Third Party Advisory
[oss-security] 20160224 Aufs Union Filesystem Privilege Escalation In User Namespaces

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

Source: BID
Type: Broken Link
96839

Source: CCN
Type: BID-96839
Linux Kernel CVE-2016-2853 Local Privilege Escalation Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve20162853-priv-esc(112866)

Source: MLIST
Type: Third Party Advisory
[aufs] 20160219 aufs3 and aufs4 GIT release

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version >= 3.0.0 and <= 3.19.8)
  • OR cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version >= 4.0.0 and <= 4.20.15)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:3.0:-:*:*:*:*:*:*
  • OR cpe:/o:linux:linux_kernel:4.0.5:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:201628530000000
    V
    		CVE-2016-2853 on Ubuntu 18.04 LTS (bionic) - low.
    2016-05-02
    oval:com.ubuntu.artful:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 17.10 (artful) - low.
    2016-05-02
    oval:com.ubuntu.trusty:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 14.04 LTS (trusty) - low.
    2016-05-02
    oval:com.ubuntu.xenial:def:201628530000000
    V
    		CVE-2016-2853 on Ubuntu 16.04 LTS (xenial) - low.
    2016-05-02
    oval:com.ubuntu.bionic:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 18.04 LTS (bionic) - low.
    2016-05-02
    oval:com.ubuntu.xenial:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 16.04 LTS (xenial) - low.
    2016-05-02
    oval:com.ubuntu.disco:def:201628530000000
    V
    		CVE-2016-2853 on Ubuntu 19.04 (disco) - low.
    2016-05-02
    oval:com.ubuntu.cosmic:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 18.10 (cosmic) - low.
    2016-05-02
    oval:com.ubuntu.cosmic:def:201628530000000
    V
    		CVE-2016-2853 on Ubuntu 18.10 (cosmic) - low.
    2016-05-02
    oval:com.ubuntu.precise:def:20162853000
    V
    		CVE-2016-2853 on Ubuntu 12.04 LTS (precise) - low.
    2016-05-02
    BACK
    linux linux kernel *
    linux linux kernel *
    linux linux kernel 3.0
    linux linux kernel 4.0.5