{"id":"USN-4898-1","summary":"curl vulnerabilities","details":"Viktor Szakats discovered that curl did not strip off user credentials\nfrom referrer header fields. A remote attacker could possibly use this\nissue to obtain sensitive information. (CVE-2021-22876)\n\nMingtao Yang discovered that curl incorrectly handled session tickets when\nusing an HTTPS proxy. A remote attacker in control of an HTTPS proxy could\nuse this issue to bypass certificate checks and intercept communications.\nThis issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10.\n(CVE-2021-22890)\n","modified":"2026-02-10T04:42:07Z","published":"2021-03-31T10:50:52Z","related":["UBUNTU-CVE-2021-22876","UBUNTU-CVE-2021-22890"],"upstream":["CVE-2021-22876","CVE-2021-22890","UBUNTU-CVE-2021-22876","UBUNTU-CVE-2021-22890"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4898-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22876"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22890"}],"affected":[{"package":{"name":"curl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/curl@7.47.0-1ubuntu2.19?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.47.0-1ubuntu2.19"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"curl"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl3"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl3-gnutls"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl3-nss"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl4-gnutls-dev"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl4-nss-dev"},{"binary_version":"7.47.0-1ubuntu2.19","binary_name":"libcurl4-openssl-dev"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[{"id":"CVE-2021-22876","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4898-1.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.13?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.58.0-2ubuntu3.13"}]}],"versions":["7.55.1-1ubuntu2","7.55.1-1ubuntu2.1","7.57.0-1ubuntu1","7.58.0-2ubuntu1","7.58.0-2ubuntu2","7.58.0-2ubuntu3","7.58.0-2ubuntu3.1","7.58.0-2ubuntu3.2","7.58.0-2ubuntu3.3","7.58.0-2ubuntu3.5","7.58.0-2ubuntu3.6","7.58.0-2ubuntu3.7","7.58.0-2ubuntu3.8","7.58.0-2ubuntu3.9","7.58.0-2ubuntu3.10","7.58.0-2ubuntu3.12"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"curl"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl3-gnutls"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl3-nss"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl4"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl4-gnutls-dev"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl4-nss-dev"},{"binary_version":"7.58.0-2ubuntu3.13","binary_name":"libcurl4-openssl-dev"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"id":"CVE-2021-22876","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4898-1.json"}},{"package":{"name":"curl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.5?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.68.0-1ubuntu2.5"}]}],"versions":["7.65.3-1ubuntu3","7.65.3-1ubuntu4","7.66.0-1ubuntu1","7.67.0-2ubuntu1","7.68.0-1ubuntu1","7.68.0-1ubuntu2","7.68.0-1ubuntu2.1","7.68.0-1ubuntu2.2","7.68.0-1ubuntu2.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"curl"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl3-gnutls"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl3-nss"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl4"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl4-gnutls-dev"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl4-nss-dev"},{"binary_version":"7.68.0-1ubuntu2.5","binary_name":"libcurl4-openssl-dev"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"id":"CVE-2021-22876","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-22890","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4898-1.json"}}],"schema_version":"1.7.3"}