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{
"schema_version": "1.7.0",
"id": "USN-4747-2",
"summary": "screen vulnerability",
"details": "USN-4747-1 fixed a vulnerability in screen. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n Felix Weinmann discovered that GNU Screen incorrectly handled certain\n character sequences. A remote attacker could use this issue to cause GNU\n Screen to crash, resulting in a denial of service, or possibly execute\n arbitrary code.\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2021-26937"
],
"related": [],
"published": "2021-02-24T19:56:30Z",
"modified": "2026-02-10T04:42:03Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "screen",
"purl": "pkg:deb/ubuntu/screen@4.1.0~20120320gitdb59704-9ubuntu0.1~esm2?arch=source&distro=trusty/esm"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm2"
}
]
}
],
"versions": [
"4.0.3-14ubuntu10",
"4.1.0~20120320gitdb59704-9",
"4.1.0~20120320gitdb59704-9ubuntu0.1~esm1"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "screen",
"binary_version": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm2"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"cves": [
{
"id": "CVE-2021-26937",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4747-2"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-26937"
}
]
}