Vulnerability Name:

CVE-2017-7533

Assigned:2017-04-05
Published:2017-08-03
Updated:2017-12-08
Summary:Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.
CVSS v3 Severity:7.0 High (CVSS v3 Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:H/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): High
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 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3 Vector: CVSS:3.0/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
7.8 High (REDHAT CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (REDHAT Temporal CVSS v3 Vector: CVSS:3.0/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
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
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-362
CWE-362
CWE-642
References:Source: MISC
Type: VENDOR_ADVISORY
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e

Source: MISC
Type: VENDOR_ADVISORY
http://openwall.com/lists/oss-security/2017/08/03/2

Source: DEBIAN
Type: UNKNOWN
DSA-3927

Source: DEBIAN
Type: UNKNOWN
DSA-3945

Source: BID
Type: VENDOR_ADVISORY
100123

Source: SECTRACK
Type: VENDOR_ADVISORY
1039075

Source: REDHAT
Type: UNKNOWN
RHSA-2017:2770

Source: REDHAT
Type: UNKNOWN
RHSA-2017:2869

Source: MISC
Type: VENDOR_ADVISORY
https://bugzilla.redhat.com/show_bug.cgi?id=1468283

Source: XF
Type: UNKNOWN
linux-kernel-cve20177533-priv-esc(129919)

Source: MISC
Type: VENDOR_ADVISORY
https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e

Source: MISC
Type: VENDOR_ADVISORY
https://patchwork.kernel.org/patch/9755753/

Source: MISC
Type: VENDOR_ADVISORY
https://patchwork.kernel.org/patch/9755757/

Source: CONFIRM
Type: UNKNOWN
https://source.android.com/security/bulletin/2017-12-01

Source: MISC
Type: VENDOR_ADVISORY
https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1408967.html

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:4.12.4:*:*:*:*:*:*:*

  • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*

  • Configuration RedHat 2:
  • cpe:/a:redhat:rhel_extras_rt:7:*:*:*:*:*:*:*

  • Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20177533
    V
    CVE-2017-7533
    2017-12-15
    oval:com.redhat.rhsa:def:20172585
    P
    RHSA-2017:2585: kernel-rt security and bug fix update (Important)
    2017-09-05
    oval:com.redhat.rhsa:def:20172473
    P
    RHSA-2017:2473: kernel security and bug fix update (Important)
    2017-08-15
    oval:com.ubuntu.trusty:def:20177533000
    V
    CVE-2017-7533 on Ubuntu 14.04 LTS (trusty) - high.
    2017-08-05
    oval:com.ubuntu.xenial:def:20177533000
    V
    CVE-2017-7533 on Ubuntu 16.04 LTS (xenial) - high.
    2017-08-05
    BACK
    linux linux_kernel 4.12.4
    redhat enterprise_linux 7
    redhat rhel_extras_rt 7