Vulnerability CVE-2018-6917

Vulnerability Name:

CVE-2018-6917 (CCN-141229)

Assigned:

2018-04-04

Published:

2018-04-04

Updated:

2018-05-24

Summary:

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p9, 10.4-STABLE, 10.4-RELEASE-p8 and 10.3-RELEASE-p28, insufficient validation of user-provided font parameters can result in an integer overflow, leading to the use of arbitrary kernel memory as glyph data. Unprivileged users may be able to access privileged kernel data.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): None Availibility (A): None

6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network 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:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-190

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2018-6917

Source: BID
Type: Third Party Advisory, VDB Entry
103668

Source: CCN
Type: BID-103668
FreeBSD CVE-2018-6917 Multiple Integer Overflow Vulnerabilities

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1040629

Source: XF
Type: UNKNOWN
freebsd-cve20186917-info-disc(141229)

Source: FREEBSD
Type: Vendor Advisory
FreeBSD-SA-18:04

Source: CCN
Type: FreeBSD Security Advisory FreeBSD-SA-18:04.vt
vt console memory disclosure

Vulnerable Configuration:

Configuration 1:

cpe:/o:freebsd:freebsd:*:*:*:*:*:*:*:* (Version >= 10.0 and < 10.4)

OR cpe:/o:freebsd:freebsd:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.1)

Configuration CCN 1:

cpe:/o:freebsd:freebsd:10.3:-:*:*:*:*:*:*

OR cpe:/o:freebsd:freebsd:11.0:*:*:*:*:*:*:*

OR cpe:/o:freebsd:freebsd:10.4:*:*:*:*:*:*:*

Denotes that component is vulnerable

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