Improper Certificate Validation in GOland Go fro del

1) Improper Certificate Validation

EUVDB-ID: #VU29673

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-2020-7919

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

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

Go before 1.12.16 and 1.13.x before 1.13.7 (and the crypto/cryptobyte package before 0.0.0-20200124225646-8b5121be2f68 for Go) allows attacks on clients (resulting in a panic) via a malformed X.509 certificate.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Go programming language: 1.13 - 1.13.6

CPE2.3

• cpe:2.3:a:google:golang:1.13.6:*:*:*:*:*:*:*

External links

https://groups.google.com/forum/#!forum/golang-announce
https://groups.google.com/forum/#!topic/golang-announce/Hsw4mHYc470
https://groups.google.com/forum/#!topic/golang-announce/-sdUB4VEQkA
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S43VLYRURELDWX4D5RFOYBNFGO6CGBBC/
https://security.netapp.com/advisory/ntap-20200327-0001/

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.