USN-5021-1 fixed vulnerabilities in curl. This update provides the corresponding updates for Ubuntu 16.04 ESM.
Original advisory details:
Harry Sintonen and Tomas Hoger discovered that curl incorrectly handled TELNET connections when the -t option was used on the command line. Uninitialized data possibly containing sensitive information could be sent to the remote server, contrary to expectations. (CVE-2021-22898, CVE-2021-22925)
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "curl" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "curl-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-dbg" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-gnutls" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-gnutls-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-nss" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl3-nss-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-doc" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-gnutls-dev" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-gnutls-dev-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-nss-dev" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-nss-dev-dbgsym" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-openssl-dev" }, { "binary_version": "7.47.0-1ubuntu2.19+esm3", "binary_name": "libcurl4-openssl-dev-dbgsym" } ] }