UBUNTU-CVE-2020-11501

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Source
https://ubuntu.com/security/CVE-2020-11501
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11501.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-11501
Upstream
Related
  • USN-4322-1
Withdrawn
2025-07-18T16:45:48Z
Published
2020-04-03T13:15:00Z
Modified
2026-01-30T01:13:04.697208Z
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
  • Ubuntu - medium
Summary
[none]
Details

GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

References

Affected packages

Ubuntu:16.04:LTS / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28@3.4.10-4ubuntu1.7?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.4.10-4ubuntu1.7

Affected versions

3.*
3.3.15-5ubuntu2
3.3.18-1ubuntu1
3.3.20-1ubuntu1
3.4.9-2ubuntu1
3.4.10-4ubuntu1
3.4.10-4ubuntu1.1
3.4.10-4ubuntu1.2
3.4.10-4ubuntu1.3
3.4.10-4ubuntu1.4
3.4.10-4ubuntu1.5
3.4.10-4ubuntu1.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "gnutls-bin-dbgsym"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "gnutls-doc"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "guile-gnutls-dbgsym"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls-dev"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls-openssl27-dbgsym"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls28-dev"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutls30-dbgsym"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutlsxx28"
        },
        {
            "binary_version": "3.4.10-4ubuntu1.7",
            "binary_name": "libgnutlsxx28-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11501.json"

Ubuntu:18.04:LTS / gnutls28

Package

Name
gnutls28
Purl
pkg:deb/ubuntu/gnutls28@3.5.18-1ubuntu1.3?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.18-1ubuntu1.3

Affected versions

3.*
3.5.8-6ubuntu3
3.5.17-1ubuntu1
3.5.17-1ubuntu3
3.5.18-1ubuntu1
3.5.18-1ubuntu1.1
3.5.18-1ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "gnutls-bin-dbgsym"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "gnutls-doc"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls-dane0-dbgsym"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls-openssl27-dbgsym"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls28-dev"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutls30-dbgsym"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutlsxx28"
        },
        {
            "binary_version": "3.5.18-1ubuntu1.3",
            "binary_name": "libgnutlsxx28-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11501.json"