CVE-2020-13777

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Source
https://cve.org/CVERecord?id=CVE-2020-13777
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13777.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-13777
Downstream
Related
Published
2020-06-04T07:15:10Z
Modified
2026-07-08T05:53:35.522161831Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*",
                "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "19.10"
                },
                {
                    "last_affected": "19.10"
                },
                {
                    "introduced": "20.04"
                },
                {
                    "last_affected": "20.04"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "canonical:ubuntu_linux"
        },
        {
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "10.0"
                },
                {
                    "last_affected": "10.0"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "debian:debian_linux"
        },
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "31"
                },
                {
                    "last_affected": "31"
                },
                {
                    "introduced": "32"
                },
                {
                    "last_affected": "32"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "fedoraproject:fedora"
        }
    ]
}
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 
{
    "cpe": "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "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"

Git / gitlab.com/gnutls/gnutls

Affected ranges

Type
GIT
Repo
https://gitlab.com/gnutls/gnutls
Events
Introduced
b4366978ae5bce1d7ccb5a8751c4f2431517edd4
Fixed
87166be33d6d51ed02dc178e3e6cd64cd5778aad
Database specific 
{
    "cpe": "cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "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"