// For flags

CVE-2018-1116

polkit: Improper authorization in polkit_backend_interactive_authority_check_authorization function in polkitd

Severity Score

4.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A flaw was found in polkit before version 0.116. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure.

Se ha descubierto un problema en versiones anteriores a la 0.116 de polkit. La implementación de la función polkit_backend_interactive_authority_check_authorization en polkitd permite probar la autenticación y desencadenar la autenticación de procesos no relacionados propiedad de otros usuarios. Esto podría resultar en una denegación de servicio (DoS) local y una divulgación de información.

It was found that Polkit's CheckAuthorization and RegisterAuthenticationAgent D-Bus calls did not validate the client provided UID. A specially crafted program could use this flaw to submit arbitrary UIDs, triggering various denial of service or minor disclosures, such as which authentication is cached in the victim's session.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-12-04 CVE Reserved
  • 2018-07-10 CVE Published
  • 2023-07-04 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-285: Improper Authorization
  • CWE-862: Missing Authorization
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Canonical
Search vendor "Canonical"
 Ubuntu Linux
Search vendor "Canonical" for product "Ubuntu Linux"
 12.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"
esm
Affected
Polkit Project
Search vendor "Polkit Project"
 Polkit
Search vendor "Polkit Project" for product "Polkit"
 < 0.115
Search vendor "Polkit Project" for product "Polkit" and version " < 0.115"
-
Affected