ubuntu-cve-2023-0464
Vulnerability from osv_ubuntu
Published
2023-03-22 17:15
Modified
2026-04-22 07:44
Summary
Details
A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the -policy' argument to the command line utilities or by calling theX509_VERIFY_PARAM_set1_policies()' function.
Severity
7.5 (High)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
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}
]
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{
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}
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}
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},
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{
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]
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]
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{
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{
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{
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},
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"1.1.1f-1ubuntu2.fips.12",
"1.1.1f-1ubuntu2.fips.13",
"1.1.1f-1ubuntu2.fips.13.1",
"1.1.1f-1ubuntu2.fips.16",
"1.1.1f-1ubuntu2.fips.17"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libssl1.1",
"binary_version": "1.1.1f-1ubuntu2.fips.7.1"
},
{
"binary_name": "libssl1.1-hmac",
"binary_version": "1.1.1f-1ubuntu2.fips.7.1"
},
{
"binary_name": "openssl",
"binary_version": "1.1.1f-1ubuntu2.fips.7.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS:20.04:LTS",
"name": "openssl",
"purl": "pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.fips.7.1?arch=source\u0026distro=fips/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.1f-1ubuntu2.fips.2.8",
"1.1.1f-1ubuntu2.fips.7.1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ovmf",
"binary_version": "2022.02-3ubuntu0.22.04.4"
},
{
"binary_name": "ovmf-ia32",
"binary_version": "2022.02-3ubuntu0.22.04.4"
},
{
"binary_name": "qemu-efi",
"binary_version": "2022.02-3ubuntu0.22.04.4"
},
{
"binary_name": "qemu-efi-aarch64",
"binary_version": "2022.02-3ubuntu0.22.04.4"
},
{
"binary_name": "qemu-efi-arm",
"binary_version": "2022.02-3ubuntu0.22.04.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "edk2",
"purl": "pkg:deb/ubuntu/edk2@2022.02-3ubuntu0.22.04.4?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2022.02-3ubuntu0.22.04.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2021.08~rc0-2",
"2021.08-3",
"2021.11~rc1-1",
"2021.11-1",
"2021.11-2",
"2022.02~rc1-1",
"2022.02~rc1-1ubuntu1",
"2022.02-1",
"2022.02-2",
"2022.02-3",
"2022.02-3ubuntu0.22.04.1",
"2022.02-3ubuntu0.22.04.2",
"2022.02-3ubuntu0.22.04.3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libssl3",
"binary_version": "3.0.2-0ubuntu1.9"
},
{
"binary_name": "openssl",
"binary_version": "3.0.2-0ubuntu1.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "openssl",
"purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.9?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.2-0ubuntu1.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.1l-1ubuntu1",
"3.0.0-1ubuntu1",
"3.0.1-0ubuntu1",
"3.0.2-0ubuntu1",
"3.0.2-0ubuntu1.1",
"3.0.2-0ubuntu1.2",
"3.0.2-0ubuntu1.4",
"3.0.2-0ubuntu1.5",
"3.0.2-0ubuntu1.6",
"3.0.2-0ubuntu1.7",
"3.0.2-0ubuntu1.8"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libnode72",
"binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
},
{
"binary_name": "nodejs",
"binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "nodejs",
"purl": "pkg:deb/ubuntu/nodejs@12.22.9~dfsg-1ubuntu3.6+esm2?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"12.22.5~dfsg-5ubuntu1",
"12.22.7~dfsg-2ubuntu1",
"12.22.7~dfsg-2ubuntu3",
"12.22.9~dfsg-1ubuntu2",
"12.22.9~dfsg-1ubuntu3",
"12.22.9~dfsg-1ubuntu3.1",
"12.22.9~dfsg-1ubuntu3.2",
"12.22.9~dfsg-1ubuntu3.3",
"12.22.9~dfsg-1ubuntu3.4",
"12.22.9~dfsg-1ubuntu3.5",
"12.22.9~dfsg-1ubuntu3.6",
"12.22.9~dfsg-1ubuntu3.6+esm2"
]
}
],
"aliases": [],
"details": "A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy\u0027 argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()\u0027 function.",
"id": "UBUNTU-CVE-2023-0464",
"modified": "2026-04-22T07:44:54Z",
"published": "2023-03-22T17:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-0464"
},
{
"type": "REPORT",
"url": "https://www.openssl.org/news/secadv/20230322.txt"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6039-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-0464"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7894-1"
}
],
"related": [
"USN-6039-1",
"USN-7894-1"
],
"schema_version": "1.7.0",
"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"
}
],
"upstream": [
"CVE-2023-0464"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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