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freebsdFreeBSDC365536D-E3CF-11EB-9D8D-B37B683944C2
HistoryJul 07, 2021 - 12:00 a.m.

go -- crypto/tls: clients can panic when provided a certificate of the wrong type for the negotiated parameters

2021-07-0700:00:00
vuxml.freebsd.org
15

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

65.6%

The Go project reports:

crypto/tls clients can panic when provided a certificate of
the wrong type for the negotiated parameters. net/http clients
performing HTTPS requests are also affected. The panic can be
triggered by an attacker in a privileged network position
without access to the server certificate’s private key, as
long as a trusted ECDSA or Ed25519 certificate for the server
exists (or can be issued), or the client is configured with
Config.InsecureSkipVerify. Clients that disable all TLS_RSA
cipher suites (that is, TLS 1.0–1.2 cipher suites without
ECDHE), as well as TLS 1.3-only clients, are unaffected.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchgo< 1.16.6,1UNKNOWN

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

65.6%