Denial of service in systemd

1) Race condition

EUVDB-ID: #VU10365

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1049

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS condition no the target system.

The weakness exists in GNU systemd due to an error when handling malicious input. An adjacent attacker can submit a specially crafted automount request, trigger race condition and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

systemd: 227 - 233

External links

http://github.com/systemd/systemd/pull/5916

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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