UBUNTU-CVE-2020-13777

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Source
https://ubuntu.com/security/CVE-2020-13777
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13777.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-13777
Related
Published
2020-06-04T07:15:00Z
Modified
2020-06-04T07:15:00Z
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.

References

Affected packages

Ubuntu:20.04:LTS / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.13-2ubuntu1.1

Affected versions

3.*

3.6.9-5ubuntu1
3.6.9-5ubuntu2
3.6.10-5
3.6.11.1-2
3.6.11.1-2ubuntu2
3.6.13-2ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "gnutls-bin-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "gnutls-doc"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "guile-gnutls-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls-dane0-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls-openssl27-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls28-dev"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutls30-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutlsxx28"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.1",
            "binary_name": "libgnutlsxx28-dbgsym"
        }
    ]
}