CVE-2020-13777

GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.

References

Affected packages

Git / github.com/gnutls/gnutls

Affected ranges

Type

GIT

Repo

https://github.com/gnutls/gnutls

Events

Introduced

b4366978ae5bce1d7ccb5a8751c4f2431517edd4

Fixed

87166be33d6d51ed02dc178e3e6cd64cd5778aad

Database specific

{
    "versions": [
        {
            "introduced": "3.6.0"
        },
        {
            "fixed": "3.6.14"
        }
    ]
}

Affected versions

3.*

3.6.12

3.6.13

3.6.14

Other

gnutls_3_6_0

gnutls_3_6_0_1

gnutls_3_6_1

gnutls_3_6_10

gnutls_3_6_11

gnutls_3_6_11_1

gnutls_3_6_12

gnutls_3_6_2

gnutls_3_6_3

gnutls_3_6_4

gnutls_3_6_5

gnutls_3_6_6

gnutls_3_6_7

gnutls_3_6_9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13777.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "31"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "32"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "19.10"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "20.04"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    }
]