#VU45699 Infinite loop in Go programming language - CVE-2020-16845

Vulnerability identifier: #VU45699

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2020-16845

CWE-ID: CWE-835

Exploitation vector: Network

Exploit availability: No

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

Vendor: Google

Description

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

The vulnerability exists due to infinite loop in "ReadUvarint" and "ReadVarint" in "encoding/binary". A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1.13 - 1.14.6

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-08/msg00021.html
https://lists.opensuse.org/opensuse-security-announce/2020-08/msg00028.html
https://groups.google.com/forum/#!topic/golang-announce/_ulYYcIWg3Q
https://groups.google.com/forum/#!topic/golang-announce/NyPIaucMgXo

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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.