{"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","modified":"2026-02-10T04:42:03Z","published":"2021-02-24T19:56:30Z","related":["UBUNTU-CVE-2021-26937"],"upstream":["CVE-2021-26937","UBUNTU-CVE-2021-26937"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4747-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-26937"}],"affected":[{"package":{"name":"screen","ecosystem":"Ubuntu:Pro:14.04:LTS","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":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"screen","binary_version":"4.1.0~20120320gitdb59704-9ubuntu0.1~esm2"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-26937","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:14.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4747-2.json"}}],"schema_version":"1.7.3"}