It was discovered that GnuTLS incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service.
{
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "gnutls-bin",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "guile-gnutls",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "libgnutls-dev",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "libgnutls-openssl27",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "libgnutls28-dev",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "libgnutls30",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
},
{
"binary_name": "libgnutlsxx28",
"binary_version": "3.4.10-4ubuntu1.9+esm1"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5750-1.json"
{
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"id": "CVE-2021-4209"
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}