USN-6485-1 (UBUNTU-CVE-2023-23583)
Vulnerability from osv_ubuntu – Published: 2023-11-17 00:12 – Updated: 2026-06-25 10:46 – Source websiteBenoit Morgan, Paul Grosen, Thais Moreira Hamasaki, Ke Sun, Alyssa Milburn, Hisham Shafi, Nir Shlomovich, Tavis Ormandy, Daniel Moghimi, Josh Eads, Salman Qazi, Alexandra Sandulescu, Andy Nguyen, Eduardo Vela, Doug Kwan, and Kostik Shtoyk discovered that some Intel(R) Processors did not properly handle certain sequences of processor instructions. A local attacker could possibly use this to cause a core hang (resulting in a denial of service), gain access to sensitive information or possibly escalate their privileges.
| URL | Type | |
|---|---|---|
{
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{
"database_specific": {
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"id": "CVE-2023-23583",
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"type": "CVSS_V3"
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}
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"type": "CVSS_V3"
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"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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"type": "Ubuntu"
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}
},
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
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}
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"database_specific": {
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{
"id": "CVE-2023-23583",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
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"type": "Ubuntu"
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]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
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"binary_name": "intel-microcode",
"binary_version": "3.20231114.0ubuntu0.20.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "intel-microcode",
"purl": "pkg:deb/ubuntu/intel-microcode@3.20231114.0ubuntu0.20.04.1?arch=source\u0026distro=focal"
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{
"database_specific": {
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{
"id": "CVE-2023-23583",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
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"type": "Ubuntu"
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]
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],
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}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "intel-microcode",
"binary_version": "3.20231114.0ubuntu0.22.04.1"
}
]
},
"package": {
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"name": "intel-microcode",
"purl": "pkg:deb/ubuntu/intel-microcode@3.20231114.0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
},
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],
"aliases": [],
"details": "Benoit Morgan, Paul Grosen, Thais Moreira Hamasaki, Ke Sun, Alyssa Milburn,\nHisham Shafi, Nir Shlomovich, Tavis Ormandy, Daniel Moghimi, Josh Eads, Salman\nQazi, Alexandra Sandulescu, Andy Nguyen, Eduardo Vela, Doug Kwan, and Kostik\nShtoyk discovered that some Intel(R) Processors did not properly handle certain\nsequences of processor instructions. A local attacker could possibly use this to\ncause a core hang (resulting in a denial of service), gain access to sensitive\ninformation or possibly escalate their privileges.\n",
"id": "USN-6485-1",
"modified": "2026-06-25T10:46:17Z",
"published": "2023-11-17T00:12:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6485-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-23583"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "intel-microcode vulnerability",
"upstream": [
"UBUNTU-CVE-2023-23583"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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