Authorization bypass in PolicyKit



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1116
CWE-ID CWE-285
Exploitation vector Local
Public exploit N/A
Vulnerable software
PolicyKit
Client/Desktop applications / Other client software

Vendor Freedesktop.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper authorization

EUVDB-ID: #VU13987

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1116

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The vulnerability exists due to improper implementation of the polkit_backend_interactive_authority_check_authorization function in the polkitd daemon. A local attacker can test for authentication and trigger authentication of unrelated processes owned by other users to access sensitive information or cause the service to crash.

Mitigation

Update to version 0.116.

Vulnerable software versions

PolicyKit: 0.95 - 0.114

CPE2.3 External links

http://cgit.freedesktop.org/polkit/commit/?id=b0a5d0f1a5b835819da630a6d27ed89dd4d7f464


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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