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{
"schema_version": "1.7.0",
"id": "USN-3276-2",
"summary": "shadow regression",
"details": "USN-3276-1 intended to fix a vulnerability in su. The solution introduced\na regression in su signal handling. This update modifies the security fix.\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Sebastian Krahmer discovered integer overflows in shadow utilities.\n A local attacker could possibly cause them to crash or potentially\n gain privileges via crafted input. (CVE-2016-6252)\n\n Tobias St\u00f6ckmann discovered a race condition in su. A local\n attacker could cause su to send SIGKILL to other processes with\n root privileges. (CVE-2017-2616)\n",
"aliases": [],
"upstream": [],
"related": [],
"published": "2017-05-17T01:55:06Z",
"modified": "2026-02-10T04:41:07Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "shadow",
"purl": "pkg:deb/ubuntu/shadow@1:4.1.5.1-1ubuntu9.5?arch=source&distro=trusty"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.1.5.1-1ubuntu9.5"
}
]
}
],
"versions": [
"1:4.1.5.1-1ubuntu6",
"1:4.1.5.1-1ubuntu7",
"1:4.1.5.1-1ubuntu8",
"1:4.1.5.1-1ubuntu9",
"1:4.1.5.1-1ubuntu9.1",
"1:4.1.5.1-1ubuntu9.2",
"1:4.1.5.1-1ubuntu9.4"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "login",
"binary_version": "1:4.1.5.1-1ubuntu9.5"
},
{
"binary_name": "passwd",
"binary_version": "1:4.1.5.1-1ubuntu9.5"
},
{
"binary_name": "uidmap",
"binary_version": "1:4.1.5.1-1ubuntu9.5"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:14.04:LTS",
"cves": []
}
}
},
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "shadow",
"purl": "pkg:deb/ubuntu/shadow@1:4.2-3.1ubuntu5.3?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.2-3.1ubuntu5.3"
}
]
}
],
"versions": [
"1:4.1.5.1-1.1ubuntu7",
"1:4.2-3.1ubuntu1",
"1:4.2-3.1ubuntu2",
"1:4.2-3.1ubuntu3",
"1:4.2-3.1ubuntu4",
"1:4.2-3.1ubuntu5",
"1:4.2-3.1ubuntu5.2"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "login",
"binary_version": "1:4.2-3.1ubuntu5.3"
},
{
"binary_name": "passwd",
"binary_version": "1:4.2-3.1ubuntu5.3"
},
{
"binary_name": "uidmap",
"binary_version": "1:4.2-3.1ubuntu5.3"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": []
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3276-2"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/1690820"
}
]
}