Vulnerability Name:

CVE-2018-6921 (CCN-143076)

Assigned:2018-05-08
Published:2018-05-08
Updated:2018-06-13
Summary:In FreeBSD before 11.1-STABLE(r332066) and 11.1-RELEASE-p10, due to insufficient initialization of memory copied to userland in the network subsystem, small amounts of kernel memory may be disclosed to userland processes. Unprivileged authenticated local users may be able to access small amounts of privileged kernel data.
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)
4.8 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: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): High
Integrity (I): None
Availibility (A): None
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/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): 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
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
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-2018-6921

Source: BID
Type: Third Party Advisory, VDB Entry
104118

Source: CCN
Type: BID-104118
FreeBSD CVE-2018-6921 Local Information Disclosure Vulnerability

Source: XF
Type: UNKNOWN
freebsd-cve20186921-info-disc(143076)

Source: CONFIRM
Type: Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-EN-18:05.mem.asc

Source: CCN
Type: FreeBSD Security Advisory FreeBSD-EN-18:05.mem
Multiple small kernel memory disclosures

Vulnerable Configuration:Configuration 1:
  • cpe:/o:freebsd:freebsd:*:*:*:*:*:*:*:* (Version >= 11.0 and < 11.1)

    • Configuration CCN 1:
  • cpe:/o:freebsd:freebsd:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    freebsd freebsd *
    freebsd freebsd *