Vulnerability CVE-2018-5953

Vulnerability Name:

CVE-2018-5953 (CCN-148123)

Assigned:

2018-08-06

Published:

2018-08-06

Updated:

2021-01-28

Summary:

The swiotlb_print_info function in lib/swiotlb.c in the Linux kernel through 4.14.14 allows local users to obtain sensitive address information by reading dmesg data from a "software IO TLB" printk 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)
4.9 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

4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
3.5 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:R)

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): Low 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

2.1 Low (CCN 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 Athentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-200

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2018-5953

Source: BID
Type: Third Party Advisory, VDB Entry
105045

Source: CCN
Type: BID-105045
Linux Kernel 'lib/swiotlb.c' Local Information Disclosure Vulnerability

Source: XF
Type: UNKNOWN
linux-kernel-cve20185953-info-disc(148123)

Source: CONFIRM
Type: Patch, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7d63fb3af87aa67aa7d24466e792f9d7c57d8e79

Source: CCN
Type: GitHub Web site
CVE-2018-5953.md

Source: MISC
Type: Third Party Advisory
https://github.com/johnsonwangqize/cve-linux/blob/master/%20CVE-2018-5953.md

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

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update

Vulnerable Configuration:

Configuration 1:

cpe:/o:linux:linux_kernel:*:*:*:*:*:*:*:* (Version <= 4.14.14)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:linux:linux_kernel:4.14.14:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:201859530000000	V	CVE-2018-5953 on Ubuntu 19.04 (disco) - low.	2018-08-07
oval:com.ubuntu.bionic:def:20185953000	V	CVE-2018-5953 on Ubuntu 18.04 LTS (bionic) - low.	2018-08-07
oval:com.ubuntu.cosmic:def:201859530000000	V	CVE-2018-5953 on Ubuntu 18.10 (cosmic) - low.	2018-08-07
oval:com.ubuntu.cosmic:def:20185953000	V	CVE-2018-5953 on Ubuntu 18.10 (cosmic) - low.	2018-08-07
oval:com.ubuntu.bionic:def:201859530000000	V	CVE-2018-5953 on Ubuntu 18.04 LTS (bionic) - low.	2018-08-07
oval:com.ubuntu.trusty:def:20185953000	V	CVE-2018-5953 on Ubuntu 14.04 LTS (trusty) - low.	2018-08-07
oval:com.ubuntu.xenial:def:201859530000000	V	CVE-2018-5953 on Ubuntu 16.04 LTS (xenial) - low.	2018-08-07
oval:com.ubuntu.xenial:def:20185953000	V	CVE-2018-5953 on Ubuntu 16.04 LTS (xenial) - low.	2018-08-07

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