// For flags

CVE-2020-15708

Libvirt Service Arbitrary File Write Privilege Escalation Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Ubuntu's packaging of libvirt in 20.04 LTS created a control socket with world read and write permissions. An attacker could use this to overwrite arbitrary files or execute arbitrary code.

El paquete de Ubuntu de libvirt en versión 20.04 LTS creó un socket de control con permisos de lectura y escritura mundial. Un atacante podría utilizar esto para sobrescribir archivos arbitrarios o ejecutar código arbitrario

This vulnerability allows local attackers to write arbitrary files on affected installations of Libvirt. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the libvirt service. The issue results from improper access control when handling the vol-upload command, which allows an arbitrary file write with attacker controlled data. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of root.

*Credits: Trent Shea
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-07-14 CVE Reserved
  • 2020-08-05 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-732: Incorrect Permission Assignment for Critical Resource
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://usn.ubuntu.com/usn/usn-4452-1 2024-02-08
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 20.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04"
lts
Affected