// For flags

CVE-2020-7453

 

Severity Score

6.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

En FreeBSD versiones 12.1-ESTABLE anteriores a r359021, versiones 12.1-RELEASE anteriores a 12.1-RELEASE-p3, versiones 11.3-ESTABLE anteriores a r359020 y versiones 11.3-RELEASE anteriores a 11.3-RELEASE-p7, una falta de comprobación de terminación null en la opción de configuración "osrelease" de jail_set puede devolver más bytes con una llamada posterior al sistema jail_get que permite a un superusuario de jaula (jail) malicioso con permiso para crear jaulas (jails) anidadas leer la memoria del kernel.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-21 CVE Reserved
  • 2020-04-28 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-754: Improper Check for Unusual or Exceptional Conditions
CAPEC
References (1)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Freebsd
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Freebsd
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11.3
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-
Affected
Freebsd
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Freebsd
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11.3
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p1
Affected
Freebsd
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Freebsd
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11.3
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p2
Affected
Freebsd
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Freebsd
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11.3
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p3
Affected
Freebsd
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Freebsd
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11.3
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p4
Affected
Freebsd
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Freebsd
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11.3
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p5
Affected
Freebsd
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Freebsd
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11.3
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p6
Affected
Freebsd
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Freebsd
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12.1
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-
Affected
Freebsd
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Freebsd
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12.1
Search vendor "Freebsd" for product "Freebsd" and version "12.1"
p1
Affected
Freebsd
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Freebsd
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12.1
Search vendor "Freebsd" for product "Freebsd" and version "12.1"
p2
Affected