CVE-2021-34558 Information
Description
The crypto/tls package of Go through 1.16.5 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.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Reference
https://groups.google.com/g/golang-announce https://groups.google.com/g/golang-announce/c/n9FxMelZGAQ https://golang.org/doc/devel/release#go1.16.minor https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BA7MFVXRBEKRTLSLYDICTYCGEMK2HZ7/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D7FRFM7WWR2JCT6NORQ7AO6B453OMI3I/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WXJ2MVMAHOIGRH37ZSFYC4EVWLJFL2EQ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYIUSR4YP52PWG7YE7AA3DZ5OSURNFJB/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITRXPCHUCJGXCX2CUEPKZRRTB27GG4ZB/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3XBQUFVI5TMV4KMKI7GKA223LHGPQISE/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LBMLUQMN6XRKPVOI5XFFBP4XSR7RNTYR/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6BTC3JQUASFN5U2XA4UZIGAPZQBD5JSS/ https://security.netapp.com/advisory/ntap-20210813-0005/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NLOGBB7XBBRB3J5FDPW5KWHSH7IRF64W/ https://www.oracle.com/security-alerts/cpuoct2021.html https://www.oracle.com/security-alerts/cpujan2022.html
Attack Complexity
LOW
Privileges Required
NONE
User Interaction Required
NONE
Scope
REQUIRED
Confidentiality Impact
UNCHANGED
Integrity Impact
NONE
Availability Impact
NONE
Base Score
HIGH
Base Severity
6.5
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