#VU55665 Improper Certificate Validation in Go programming language
Vulnerability identifier: #VU55665
Vulnerability risk: Medium
CVSSv3.1:
CVE-ID:
CWE-ID:
CWE-295
Exploitation vector: Network
Exploit availability: Yes
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 improper certificate verification in crypto/tls package in Go when processing X.509 certificates. The application does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Go programming language: 1.16 - 1.16.5
CPE
External links
http://groups.google.com/g/golang-announce
http://groups.google.com/g/golang-announce/c/n9FxMelZGAQ
http://golang.org/doc/devel/release#go1.16.minor
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BA7MFVXRBEKRTLSLYDICTYCGEMK2HZ7/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7FRFM7WWR2JCT6NORQ7AO6B453OMI3I/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WXJ2MVMAHOIGRH37ZSFYC4EVWLJFL2EQ/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYIUSR4YP52PWG7YE7AA3DZ5OSURNFJB/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
