Privilege escalation in D-Bus



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-416
Exploitation vector Local
Public exploit N/A
Vulnerable software
 D-Bus
Client/Desktop applications / Messaging software

Vendor Freedesktop.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU49165

Risk: Low

CVSSv4.0: 4.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error when processing different usernames with the same numeric uid. A local user with ability to change own uid can trigger a use-after-free error and escalate privileges on the system.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

D-Bus: 1.12.0 - 1.12.18

CPE2.3 External links

https://lists.freedesktop.org/archives/ftp-release/2020-July/000758.html


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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