usn-7954-1
Vulnerability from osv_ubuntu
Published
2026-01-12 13:52
Modified
2026-04-22 07:37
Summary
libtasn1-6 vulnerabilities
Details
It was discovered that Libtasn1 incorrectly handled decoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. (CVE-2025-13151)
It was discovered that Libtasn1 incorrectly handled encoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-46848)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-46848",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2025-13151",
"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": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtasn1-6",
"binary_version": "4.18.0-4ubuntu0.2"
},
{
"binary_name": "libtasn1-bin",
"binary_version": "4.18.0-4ubuntu0.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "libtasn1-6",
"purl": "pkg:deb/ubuntu/libtasn1-6@4.18.0-4ubuntu0.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.18.0-4ubuntu0.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.16.0-2",
"4.16.0-2build1",
"4.17.0-2",
"4.18.0-3",
"4.18.0-4",
"4.18.0-4build1",
"4.18.0-4ubuntu0.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-13151",
"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": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtasn1-6",
"binary_version": "4.19.0-3ubuntu0.24.04.2"
},
{
"binary_name": "libtasn1-bin",
"binary_version": "4.19.0-3ubuntu0.24.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "libtasn1-6",
"purl": "pkg:deb/ubuntu/libtasn1-6@4.19.0-3ubuntu0.24.04.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.19.0-3ubuntu0.24.04.2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.19.0-3",
"4.19.0-3build1",
"4.19.0-3ubuntu0.24.04.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2025-13151",
"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": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libtasn1-6",
"binary_version": "4.20.0-2ubuntu0.25.10.1"
},
{
"binary_name": "libtasn1-bin",
"binary_version": "4.20.0-2ubuntu0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "libtasn1-6",
"purl": "pkg:deb/ubuntu/libtasn1-6@4.20.0-2ubuntu0.25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.20.0-2ubuntu0.25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.20.0-2",
"4.20.0-2build1"
]
}
],
"aliases": [],
"details": "It was discovered that Libtasn1 incorrectly handled decoding ASN.1 content.\nAn attacker could possibly use this issue to cause Libtasn1 to crash,\nresulting in a denial of service. (CVE-2025-13151)\n\nIt was discovered that Libtasn1 incorrectly handled encoding ASN.1 content.\nAn attacker could possibly use this issue to cause Libtasn1 to crash,\nresulting in a denial of service. This issue only affected Ubuntu 22.04\nLTS. (CVE-2021-46848)",
"id": "USN-7954-1",
"modified": "2026-04-22T07:37:26Z",
"published": "2026-01-12T13:52:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7954-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-46848"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-13151"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "libtasn1-6 vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-46848",
"UBUNTU-CVE-2025-13151"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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