Vulnerability Name: | CVE-2020-7453 (CCN-181208) |
Assigned: | 2020-03-19 |
Published: | 2020-03-19 |
Updated: | 2020-05-06 |
Summary: | In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option "osrelease" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory.
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CVSS v3 Severity: | 6.0 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N) 5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)Exploitability Metrics: | Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None | Scope: | Scope (S): Unchanged
| Impact Metrics: | Confidentiality (C): High Integrity (I): High Availibility (A): None | 4.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N) 3.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/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): High User Interaction (UI): None | Scope: | Scope (S): Unchanged
| Impact Metrics: | Confidentiality (C): High Integrity (I): None Availibility (A): None |
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CVSS v2 Severity: | 3.3 Low (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:N)Exploitability Metrics: | Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None | Impact Metrics: | Confidentiality (C): Partial Integrity (I): Partial 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 |
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Vulnerability Type: | CWE-754
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Vulnerability Consequences: | Obtain Information |
References: | Source: MITRE Type: CNA CVE-2020-7453
Source: XF Type: UNKNOWN freebsd-cve20207453-info-disc(181208)
Source: CONFIRM Type: Patch, Vendor Advisory https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc
Source: CCN Type: FreeBSD Security Advisory FreeBSD-SA-20:08.jail Kernel memory disclosure with nested jails
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Vulnerable Configuration: | Configuration 1: cpe:/o:freebsd:freebsd:11.3:-:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:12.1:-:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*OR cpe:/o:freebsd:freebsd:12.1:p2:*:*:*:*:*:* Configuration CCN 1: cpe:/o:freebsd:freebsd:*:*:*:*:*:*:*:*
Denotes that component is vulnerable |
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