Vulnerability Name:

CVE-2018-20449 (CCN-161621)

Assigned:2018-12-25
Published:2019-01-22
Updated:2019-05-02
Summary:The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading "callback=" lines in a debugfs file.
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)
4.9 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:U/RC:R)
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
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.9 Medium (CCN 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:U/RC:R)
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
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2018-20449

Source: CONFIRM
Type: Patch, Third Party Advisory
https://elixir.bootlin.com/linux/v4.14.90/source/drivers/dma/qcom/hidma_dbg.c#L92

Source: XF
Type: UNKNOWN
linux-kernel-cve201820449-info-disc(161621)

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0002/

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

Source: CCN
Type: The Mail Archive, Tue, 22 Jan 2019 02:52:04 -0800
CVE-2018-20449

Source: MISC
Type: Mailing List, Third Party Advisory
https://www.mail-archive.com/debian-security-tracker@lists.debian.org/msg03808.html

Vulnerable Configuration:Configuration 1:
  • cpe:/o:linux:linux_kernel:4.14.90:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/a:netapp:element_software_management_node:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:4.14.90:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:201820449000
    V
    		CVE-2018-20449 on Ubuntu 18.04 LTS (bionic) - negligible.
    2019-04-04
    oval:com.ubuntu.cosmic:def:2018204490000000
    V
    		CVE-2018-20449 on Ubuntu 18.10 (cosmic) - negligible.
    2019-04-04
    oval:com.ubuntu.cosmic:def:201820449000
    V
    		CVE-2018-20449 on Ubuntu 18.10 (cosmic) - negligible.
    2019-04-04
    oval:com.ubuntu.bionic:def:2018204490000000
    V
    		CVE-2018-20449 on Ubuntu 18.04 LTS (bionic) - negligible.
    2019-04-04
    oval:com.ubuntu.trusty:def:201820449000
    V
    		CVE-2018-20449 on Ubuntu 14.04 LTS (trusty) - negligible.
    2019-04-04
    oval:com.ubuntu.xenial:def:2018204490000000
    V
    		CVE-2018-20449 on Ubuntu 16.04 LTS (xenial) - negligible.
    2019-04-04
    oval:com.ubuntu.xenial:def:201820449000
    V
    		CVE-2018-20449 on Ubuntu 16.04 LTS (xenial) - negligible.
    2019-04-04
    BACK
    linux linux kernel 4.14.90
    netapp element software management node -
    linux linux kernel 4.14.90