#VU10565 Denial of service in Red Hat OpenStack - CVE-2017-16820

Vulnerability identifier: #VU10565

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-16820

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Red Hat OpenStack
Server applications / Other server solutions

Vendor: Red Hat Inc.

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

The weakness exists due to the csnmp_read_table function in the snmp.c code in the SNMP plug-in of the collectd daemon. A remote attacker can send specially crafted input to the target system, trigger a double-free memory condition and cause the collected daemon to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Red Hat OpenStack: 11.0

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External links
https://access.redhat.com/security/cve/CVE-2017-16820
https://access.redhat.com/errata/RHSA-2018:0299

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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.