{"id":"USN-5079-4","summary":"curl regression","details":"USN-5079-2 fixed vulnerabilities in curl. One of the fixes introduced a\nregression. This update fixes the problem.\n\nOriginal advisory details:\n\n Patrick Monnerat discovered that curl incorrectly handled upgrades to TLS.\n When receiving certain responses from servers, curl would continue without\n TLS even when the option to require a successful upgrade to TLS was\n specified. (CVE-2021-22946)\n\n Patrick Monnerat discovered that curl incorrectly handled responses\n received before STARTTLS. A remote attacker could possibly use this issue\n to inject responses and intercept communications. (CVE-2021-22947)\n","modified":"2026-04-22T10:31:18.511516Z","published":"2021-09-21T13:07:33Z","related":["UBUNTU-CVE-2021-22947"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5079-4"},{"type":"REPORT","url":"https://launchpad.net/bugs/1944120"}],"affected":[{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/curl@7.35.0-1ubuntu2.20+esm9?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.35.0-1ubuntu2.20+esm9"}]}],"versions":["7.32.0-1ubuntu1","7.33.0-1ubuntu1","7.34.0-1ubuntu1","7.35.0-1ubuntu1","7.35.0-1ubuntu2","7.35.0-1ubuntu2.1","7.35.0-1ubuntu2.2","7.35.0-1ubuntu2.3","7.35.0-1ubuntu2.5","7.35.0-1ubuntu2.6","7.35.0-1ubuntu2.7","7.35.0-1ubuntu2.8","7.35.0-1ubuntu2.9","7.35.0-1ubuntu2.10","7.35.0-1ubuntu2.11","7.35.0-1ubuntu2.12","7.35.0-1ubuntu2.13","7.35.0-1ubuntu2.14","7.35.0-1ubuntu2.15","7.35.0-1ubuntu2.16","7.35.0-1ubuntu2.17","7.35.0-1ubuntu2.19","7.35.0-1ubuntu2.20","7.35.0-1ubuntu2.20+esm2","7.35.0-1ubuntu2.20+esm3","7.35.0-1ubuntu2.20+esm4","7.35.0-1ubuntu2.20+esm5","7.35.0-1ubuntu2.20+esm6","7.35.0-1ubuntu2.20+esm7","7.35.0-1ubuntu2.20+esm8"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"curl","binary_version":"7.35.0-1ubuntu2.20+esm9"},{"binary_name":"libcurl3","binary_version":"7.35.0-1ubuntu2.20+esm9"},{"binary_name":"libcurl3-gnutls","binary_version":"7.35.0-1ubuntu2.20+esm9"},{"binary_name":"libcurl3-nss","binary_version":"7.35.0-1ubuntu2.20+esm9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5079-4.json","cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[]}}},{"package":{"name":"curl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.19+esm2?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.47.0-1ubuntu2.19+esm2"}]}],"versions":["7.43.0-1ubuntu2","7.45.0-1ubuntu1","7.46.0-1ubuntu1","7.47.0-1ubuntu1","7.47.0-1ubuntu2","7.47.0-1ubuntu2.1","7.47.0-1ubuntu2.2","7.47.0-1ubuntu2.3","7.47.0-1ubuntu2.4","7.47.0-1ubuntu2.5","7.47.0-1ubuntu2.6","7.47.0-1ubuntu2.7","7.47.0-1ubuntu2.8","7.47.0-1ubuntu2.9","7.47.0-1ubuntu2.11","7.47.0-1ubuntu2.12","7.47.0-1ubuntu2.13","7.47.0-1ubuntu2.14","7.47.0-1ubuntu2.15","7.47.0-1ubuntu2.16","7.47.0-1ubuntu2.18","7.47.0-1ubuntu2.19","7.47.0-1ubuntu2.19+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"curl","binary_version":"7.47.0-1ubuntu2.19+esm2"},{"binary_name":"libcurl3","binary_version":"7.47.0-1ubuntu2.19+esm2"},{"binary_name":"libcurl3-gnutls","binary_version":"7.47.0-1ubuntu2.19+esm2"},{"binary_name":"libcurl3-nss","binary_version":"7.47.0-1ubuntu2.19+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5079-4.json","cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[]}}}],"schema_version":"1.7.5"}