Vulnerability identifier: #VU38145

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-1000098

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Go programming language
Universal components / Libraries / Scripting languages

Vendor: Google

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The net/http package's Request.ParseMultipartForm method starts writing to temporary files once the request body size surpasses the given "maxMemory" limit. It was possible for an attacker to generate a multipart request crafted such that the server ran out of file descriptors.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Go programming language: 1.6.3, 1.7.3

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External links
http://golang.org/cl/30410
http://golang.org/issue/17965
http://groups.google.com/forum/#!msg/golang-dev/4NdLzS8sls8/uIz8QlnIBQAJ

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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.