Denial of service in collectd (Alpine package)

1) Denial of service

EUVDB-ID: #VU10565

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 - Double Free

Exploit availability: No

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

collectd (Alpine package): 5.6.2-r0

CPE2.3

• cpe:2.3:o:alpine:collectd_alpine_package:5.6.2-r0:*:*:*:*:alpine_linux:*:3.4

External links

https://git.alpinelinux.org/aports/commit/?id=26325b1d5f5c459e3f22b1f89e6390d09a606075
https://git.alpinelinux.org/aports/commit/?id=78d9dc2003ee945ddbac244428303804d89c9907
https://git.alpinelinux.org/aports/commit/?id=7f7bca51f929ec01d357666e4e98e3dcb666d7f7

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.