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{
"schema_version": "1.7.0",
"id": "USN-5079-3",
"summary": "curl vulnerabilities",
"details": "USN-5079-1 fixed vulnerabilities in curl. One of the fixes introduced a\nregression on Ubuntu 18.04 LTS. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n It was discovered that curl incorrect handled memory when sending data to\n an MQTT server. A remote attacker could use this issue to cause curl to\n crash, resulting in a denial of service, or possibly execute arbitrary\n code. (CVE-2021-22945)\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",
"aliases": [],
"upstream": [],
"related": [],
"published": "2021-09-21T11:34:54Z",
"modified": "2026-04-22T07:37:00Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "curl",
"purl": "pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.16?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.58.0-2ubuntu3.16"
}
]
}
],
"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",
"7.58.0-2ubuntu3.13",
"7.58.0-2ubuntu3.14",
"7.58.0-2ubuntu3.15"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "curl",
"binary_version": "7.58.0-2ubuntu3.16"
},
{
"binary_name": "libcurl3-gnutls",
"binary_version": "7.58.0-2ubuntu3.16"
},
{
"binary_name": "libcurl3-nss",
"binary_version": "7.58.0-2ubuntu3.16"
},
{
"binary_name": "libcurl4",
"binary_version": "7.58.0-2ubuntu3.16"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": []
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5079-3"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1944120"
}
]
}