Vulnerability Name:

CVE-2017-18193 (CCN-139422)

Assigned:2018-02-22
Published:2018-02-22
Updated:2018-05-24
Summary:fs/f2fs/extent_cache.c in the Linux kernel before 4.13 mishandles extent trees, which allows local users to cause a denial of service (BUG) via an application with multiple threads.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-119
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-18193

Source: MISC
Type: Patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dad48e73127ba10279ea33e6dbc8d3905c4d31c0

Source: BID
Type: Third Party Advisory, VDB Entry
103147

Source: CCN
Type: BID-103147
Linux Kernel 'fs/f2fs/extent_cache.c' Local Denial of Service Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve201718193-dos(139422)

Source: CCN
Type: Linux Kernel GIT Repository
f2fs: fix a bug caused by NULL extent tree

Source: MISC
Type: Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/dad48e73127ba10279ea33e6dbc8d3905c4d31c0

Source: UBUNTU
Type: UNKNOWN
USN-3654-1

Source: UBUNTU
Type: UNKNOWN
USN-3654-2

Source: UBUNTU
Type: UNKNOWN
USN-3656-1

Source: DEBIAN
Type: UNKNOWN
DSA-4188

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-18193

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version < 4.13)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.12:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2017181930000000
    V
    		CVE-2017-18193 on Ubuntu 16.04 LTS (xenial) - low.
    2018-02-22
    oval:com.ubuntu.artful:def:201718193000
    V
    		CVE-2017-18193 on Ubuntu 17.10 (artful) - medium.
    2018-02-22
    oval:com.ubuntu.xenial:def:201718193000
    V
    		CVE-2017-18193 on Ubuntu 16.04 LTS (xenial) - low.
    2018-02-22
    oval:com.ubuntu.bionic:def:201718193000
    V
    		CVE-2017-18193 on Ubuntu 18.04 LTS (bionic) - low.
    2018-02-22
    oval:com.ubuntu.cosmic:def:2017181930000000
    V
    		CVE-2017-18193 on Ubuntu 18.10 (cosmic) - low.
    2018-02-22
    oval:com.ubuntu.cosmic:def:201718193000
    V
    		CVE-2017-18193 on Ubuntu 18.10 (cosmic) - low.
    2018-02-22
    oval:com.ubuntu.bionic:def:2017181930000000
    V
    		CVE-2017-18193 on Ubuntu 18.04 LTS (bionic) - low.
    2018-02-22
    oval:com.ubuntu.trusty:def:201718193000
    V
    		CVE-2017-18193 on Ubuntu 14.04 LTS (trusty) - low.
    2018-02-22
    BACK
    linux linux kernel *
    linux linux kernel 4.12