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freebsdFreeBSD0A7A5DFB-ABA4-11ED-BE2C-001CC0382B2F
HistoryFeb 10, 2023 - 12:00 a.m.

GnuTLS -- timing sidechannel in RSA decryption

2023-02-1000:00:00
vuxml.freebsd.org
16

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

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

50.5%

The GnuTLS project reports:

A vulnerability was found that the response times to malformed RSA
ciphertexts in ClientKeyExchange differ from response times of
ciphertexts with correct PKCS#1 v1.5 padding. Only TLS ciphertext
processing is affected.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchgnutls< 3.7.9UNKNOWN

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

4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

50.5%