Vulnerability Name:

CVE-2017-17864

Assigned:2017-12-23
Published:2017-12-23
Updated:2018-01-12
Summary:kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
CVSS v3 Severity:3.3 Low (CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
2.9 Low (Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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): Low
Integrity (I): None
Availibility (A): None
5.5 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3 Vector: CVSS:3.0/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
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
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
References:Source: BID
Type: VENDOR_ADVISORY
102320

Source: SECTRACK
Type: VENDOR_ADVISORY
1040059

Source: MISC
Type: VENDOR_ADVISORY
https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0

Source: MISC
Type: VENDOR_ADVISORY
https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security

Source: XF
Type: UNKNOWN
linux-kernel-cve201717864-info-disc(136723)

Source: UBUNTU
Type: UNKNOWN
USN-3523-2

Source: DEBIAN
Type: VENDOR_ADVISORY
DSA-4073

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:4.14.8:*:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:201717864
    V
    CVE-2017-17864
    2018-09-18
    oval:com.ubuntu.xenial:def:201717864000
    V
    CVE-2017-17864 on Ubuntu 16.04 LTS (xenial) - low.
    2017-12-27
    oval:com.ubuntu.trusty:def:201717864000
    V
    CVE-2017-17864 on Ubuntu 14.04 LTS (trusty) - low.
    2017-12-27
    oval:com.ubuntu.artful:def:201717864000
    V
    CVE-2017-17864 on Ubuntu 17.10 (artful) - low.
    2017-12-27
    BACK
    linux linux kernel 4.14.8
    debian debian linux 9.0