usn-4274-1
Vulnerability from osv_ubuntu
Published
2020-02-10 14:04
Modified
2026-06-29 10:52
Summary
libxml2 vulnerabilities
Details
It was discovered that libxml2 incorrectly handled certain XML files. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-19956, CVE-2020-7595)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2019-19956",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-7595",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libxml2",
"binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm1"
},
{
"binary_name": "libxml2-utils",
"binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm1"
},
{
"binary_name": "python-libxml2",
"binary_version": "2.9.1+dfsg1-3ubuntu4.13+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "libxml2",
"purl": "pkg:deb/ubuntu/libxml2@2.9.1+dfsg1-3ubuntu4.13+esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.1+dfsg1-3ubuntu4.13+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.1+dfsg1-3ubuntu2",
"2.9.1+dfsg1-3ubuntu3",
"2.9.1+dfsg1-3ubuntu4",
"2.9.1+dfsg1-3ubuntu4.1",
"2.9.1+dfsg1-3ubuntu4.2",
"2.9.1+dfsg1-3ubuntu4.3",
"2.9.1+dfsg1-3ubuntu4.4",
"2.9.1+dfsg1-3ubuntu4.5",
"2.9.1+dfsg1-3ubuntu4.6",
"2.9.1+dfsg1-3ubuntu4.7",
"2.9.1+dfsg1-3ubuntu4.8",
"2.9.1+dfsg1-3ubuntu4.9",
"2.9.1+dfsg1-3ubuntu4.10",
"2.9.1+dfsg1-3ubuntu4.11",
"2.9.1+dfsg1-3ubuntu4.12",
"2.9.1+dfsg1-3ubuntu4.13"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2019-19956",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-7595",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libxml2",
"binary_version": "2.9.3+dfsg1-1ubuntu0.7"
},
{
"binary_name": "libxml2-utils",
"binary_version": "2.9.3+dfsg1-1ubuntu0.7"
},
{
"binary_name": "python-libxml2",
"binary_version": "2.9.3+dfsg1-1ubuntu0.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "libxml2",
"purl": "pkg:deb/ubuntu/libxml2@2.9.3+dfsg1-1ubuntu0.7?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.3+dfsg1-1ubuntu0.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.2+zdfsg1-4",
"2.9.2+zdfsg1-4ubuntu1",
"2.9.2+zdfsg1-4ubuntu2",
"2.9.2+zdfsg1-4ubuntu3",
"2.9.3+dfsg1-1",
"2.9.3+dfsg1-1ubuntu0.1",
"2.9.3+dfsg1-1ubuntu0.2",
"2.9.3+dfsg1-1ubuntu0.3",
"2.9.3+dfsg1-1ubuntu0.4",
"2.9.3+dfsg1-1ubuntu0.5",
"2.9.3+dfsg1-1ubuntu0.6"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2019-19956",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-7595",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libxml2",
"binary_version": "2.9.4+dfsg1-6.1ubuntu1.3"
},
{
"binary_name": "libxml2-utils",
"binary_version": "2.9.4+dfsg1-6.1ubuntu1.3"
},
{
"binary_name": "python-libxml2",
"binary_version": "2.9.4+dfsg1-6.1ubuntu1.3"
},
{
"binary_name": "python3-libxml2",
"binary_version": "2.9.4+dfsg1-6.1ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "libxml2",
"purl": "pkg:deb/ubuntu/libxml2@2.9.4+dfsg1-6.1ubuntu1.3?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.4+dfsg1-6.1ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.9.4+dfsg1-4ubuntu1",
"2.9.4+dfsg1-5ubuntu1",
"2.9.4+dfsg1-5ubuntu2",
"2.9.4+dfsg1-5.1ubuntu1",
"2.9.4+dfsg1-5.2ubuntu1",
"2.9.4+dfsg1-6.1ubuntu1",
"2.9.4+dfsg1-6.1ubuntu1.2"
]
}
],
"aliases": [],
"details": "It was discovered that libxml2 incorrectly handled certain XML files.\nAn attacker could possibly use this issue to cause a denial of service.\n(CVE-2019-19956, CVE-2020-7595)\n",
"id": "USN-4274-1",
"modified": "2026-06-29T10:52:44Z",
"published": "2020-02-10T14:04:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4274-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-19956"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-7595"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libxml2 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2019-19956",
"UBUNTU-CVE-2020-7595"
]
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- 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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