USN-6499-1 fixed vulnerabilities in GnuTLS. This update provides the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that GnuTLS had a timing side-channel when handling certain RSA-PSK key exchanges. A remote attacker could possibly use this issue to recover sensitive information.
{ "binaries": [ { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "gnutls-bin" }, { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "libgnutls-dane0" }, { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "libgnutls-openssl27" }, { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "libgnutls28-dev" }, { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "libgnutls30" }, { "binary_version": "3.5.18-1ubuntu1.6+esm1", "binary_name": "libgnutlsxx28" } ], "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro" }
{ "ecosystem": "Ubuntu:Pro:18.04:LTS", "cves": [ { "id": "CVE-2023-5981", "severity": [ { "type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "type": "Ubuntu", "score": "medium" } ] } ] }