USN-4267-1 (UBUNTU-CVE-2017-18187)
Vulnerability from osv_ubuntu – Published: 2020-02-05 12:12 – Updated: 2026-04-27 14:11 – Source websiteIt was discovered that mbedtls has a bounds-check bypass through an integer overflow that can be used by an attacked to execute arbitrary code or cause a denial of service. (CVE-2017-18187)
It was discovered that mbedtls has a vulnerability where an attacker could execute arbitrary code or cause a denial of service (buffer overflow) via a crafted certificate chain that is mishandled during RSASSA-PSS signature verification within a TLS or DTLS session. (CVE-2018-0487)
It was discovered that mbedtls has a vulnerability where an attacker could execute arbitrary code or cause a denial of service (heap corruption) via a crafted application packet within a TLS or DTLS session. (CVE-2018-0488)
It was discovered that mbedtls has a vulnerability that allows remote attackers to achieve partial plaintext recovery (for a CBC based ciphersuite) via a timing-based side-channel attack. (CVE-2018-0497)
It was discovered that mbedtls has a vulnerability that allows local users to achieve partial plaintext recovery (for a CBC based ciphersuite) via a cache-based side-channel attack. (CVE-2018-0498)
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2017-18187",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-0487",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-0488",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-0497",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-0498",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libmbedcrypto0",
"binary_version": "2.2.1-2ubuntu0.3"
},
{
"binary_name": "libmbedtls10",
"binary_version": "2.2.1-2ubuntu0.3"
},
{
"binary_name": "libmbedx509-0",
"binary_version": "2.2.1-2ubuntu0.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "mbedtls",
"purl": "pkg:deb/ubuntu/mbedtls@2.2.1-2ubuntu0.3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.1-2ubuntu0.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.2-1",
"2.2.0-1",
"2.2.1-1",
"2.2.1-2",
"2.2.1-2ubuntu0.1",
"2.2.1-2ubuntu0.2"
]
}
],
"aliases": [],
"details": "It was discovered that mbedtls has a bounds-check bypass through an integer\noverflow that can be used by an attacked to execute arbitrary code or cause a\ndenial of service.\n(CVE-2017-18187)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could\nexecute arbitrary code or cause a denial of service (buffer overflow)\nvia a crafted certificate chain that is mishandled during RSASSA-PSS\nsignature verification within a TLS or DTLS session.\n(CVE-2018-0487)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could\nexecute arbitrary code or cause a denial of service (heap corruption) via a\ncrafted application packet within a TLS or DTLS session.\n(CVE-2018-0488)\n\nIt was discovered that mbedtls has a vulnerability that allows remote\nattackers to achieve partial plaintext recovery (for a CBC based ciphersuite)\nvia a timing-based side-channel attack.\n(CVE-2018-0497)\n\nIt was discovered that mbedtls has a vulnerability that allows local users to\nachieve partial plaintext recovery (for a CBC based ciphersuite) via a\ncache-based side-channel attack.\n(CVE-2018-0498)\n",
"id": "USN-4267-1",
"modified": "2026-04-27T14:11:25Z",
"published": "2020-02-05T12:12:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4267-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2017-18187"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-0487"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-0488"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-0497"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-0498"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "mbedtls vulnerabilities",
"upstream": [
"UBUNTU-CVE-2017-18187",
"UBUNTU-CVE-2018-0487",
"UBUNTU-CVE-2018-0488",
"UBUNTU-CVE-2018-0497",
"UBUNTU-CVE-2018-0498"
]
}
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