#VU12974 Race condition in procps - CVE-2018-1121

Vulnerability identifier: #VU12974

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-1121

CWE-ID: CWE-362

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
procps
Client/Desktop applications / Software for system administration

Vendor: procps-ng

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to a race condition inherent in reading /proc/PID entries. A remote attacker can hide a process from procps-ng's utilities and cause the service to crash.

Mitigation
Update to version 3.3.15.

Vulnerable software versions

procps: All versions

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External links
https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt

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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. However, proof of concept for this vulnerability is available.