Vulnerability Name:

CVE-2017-14954 (CCN-132861)

Assigned:2017-09-29
Published:2017-09-29
Updated:2017-10-06
Summary:The waitid implementation in kernel/exit.c in the Linux kernel through 4.13.4 accesses rusage data structures in unintended cases, which allows local users to obtain sensitive information, and bypass the KASLR protection mechanism, via a crafted system call.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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): None
Availibility (A): None
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/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): None
Availibility (A): None
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2017-14954

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9

Source: XF
Type: UNKNOWN
linux-kernel-cve201714954-info-disc(132861)

Source: CCN
Type: Linux Kernel GIT Repository
fix infoleak in waitid(2)

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/torvalds/linux/commit/6c85501f2fabcfc4fc6ed976543d252c4eaf4be9

Source: MISC
Type: Third Party Advisory
https://grsecurity.net/~spender/exploits/wait_for_kaslr_to_be_effective.c

Source: MISC
Type: Third Party Advisory
https://twitter.com/grsecurity/status/914079864478666753

Source: MISC
Type: Third Party Advisory
https://twitter.com/_argp/status/914021130712870912

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.13.4)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.13.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2017149540000000
    V
    		CVE-2017-14954 on Ubuntu 16.04 LTS (xenial) - low.
    2017-10-02
    oval:com.ubuntu.artful:def:201714954000
    V
    		CVE-2017-14954 on Ubuntu 17.10 (artful) - low.
    2017-10-01
    oval:com.ubuntu.trusty:def:201714954000
    V
    		CVE-2017-14954 on Ubuntu 14.04 LTS (trusty) - low.
    2017-10-01
    oval:com.ubuntu.xenial:def:201714954000
    V
    		CVE-2017-14954 on Ubuntu 16.04 LTS (xenial) - low.
    2017-10-01
    BACK
    linux linux kernel *
    linux linux kernel 4.13.4