#VU6932 Security restrictions bypass in D-Bus


Published: 2017-06-06 | Updated: 2017-06-09

Vulnerability identifier: #VU6932

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
D-Bus
Client/Desktop applications / Messaging software

Vendor: Freedesktop.org

Description
Multiple vulnerabilities in D-Bus might allow an attacker to overwrite files with a fixed filename in arbitrary directories or conduct a symlink attack.

An attacker could possibly overwrite arbitrary files named “once” with content not controlled by the attacker.

A local attacker could perform a symlink attack against D-Bus’ test suite.

Mitigation
Update to version 1.10.18.

Vulnerable software versions

D-Bus: 1.10.2 - 1.10.16, 1.11.10, 1.4.10 - 1.4.20


External links
http://www.openwall.com/lists/oss-security/2017/02/16/4


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability