Vulnerability Name:

CVE-2018-19406 (CCN-153259)

Assigned:2018-11-20
Published:2018-11-20
Updated:2018-12-19
Summary:kvm_pv_send_ipi in arch/x86/kvm/lapic.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where the apic map is uninitialized.
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-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-19406

Source: BID
Type: Third Party Advisory, VDB Entry
105988

Source: XF
Type: UNKNOWN
linux-kernel-cve201819406-dos(153259)

Source: CCN
Type: LKML Web site
KVM: LAPIC: Fix pv ipis use-before-initialization

Source: MISC
Type: Patch, Third Party Advisory
https://lkml.org/lkml/2018/11/20/411

Source: CCN
Type: Linux Kernel Web site
The Linux Kernel Archives

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-19406

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.19.2)

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.19.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:2018194060000000
    V
    		CVE-2018-19406 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-11-21
    oval:com.ubuntu.xenial:def:2018194060000000
    V
    		CVE-2018-19406 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-11-21
    oval:com.ubuntu.bionic:def:201819406000
    V
    		CVE-2018-19406 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-11-20
    oval:com.ubuntu.cosmic:def:2018194060000000
    V
    		CVE-2018-19406 on Ubuntu 18.10 (cosmic) - medium.
    2018-11-20
    oval:com.ubuntu.cosmic:def:201819406000
    V
    		CVE-2018-19406 on Ubuntu 18.10 (cosmic) - medium.
    2018-11-20
    oval:com.ubuntu.trusty:def:201819406000
    V
    		CVE-2018-19406 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-11-20
    oval:com.ubuntu.xenial:def:201819406000
    V
    		CVE-2018-19406 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-11-20
    BACK
    linux linux kernel *
    linux linux kernel 4.19.2