UBUNTU-CVE-2020-24659

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Source
https://ubuntu.com/security/CVE-2020-24659
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-24659.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-24659
Related
Published
2020-09-04T15:15:00Z
Modified
2020-09-04T15:15:00Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a norenegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutlsdeinit function is called after detecting a handshake failure.

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
3.6.13-2ubuntu1.3

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
3.6.13-2ubuntu1.1
3.6.13-2ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "gnutls-bin"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "gnutls-bin-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "gnutls-doc"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "guile-gnutls"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "guile-gnutls-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls-dane0"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls-dane0-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls-openssl27"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls-openssl27-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls28-dev"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls30"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutls30-dbgsym"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutlsxx28"
        },
        {
            "binary_version": "3.6.13-2ubuntu1.3",
            "binary_name": "libgnutlsxx28-dbgsym"
        }
    ]
}