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freebsdFreeBSDEF5B4F5F-A658-11EA-80D7-001CC0382B2F
HistoryJun 03, 2020 - 12:00 a.m.

GnuTLS -- flaw in TLS session ticket key construction

2020-06-0300:00:00
vuxml.freebsd.org
9

7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

69.4%

JSON

The GnuTLS project reports:

It was found that GnuTLS 3.6.4 introduced a regression in the TLS
protocol implementation. This caused the TLS server to not securely
construct a session ticket encryption key considering the
application supplied secret, allowing a MitM attacker to bypass
authentication in TLS 1.3 and recover previous conversations in TLS
1.2.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchgnutls< 3.6.14UNKNOWN

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7.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

69.4%

JSON
Related for EF5B4F5F-A658-11EA-80D7-001CC0382B2F
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