GSD-2019-1549
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2019-1549",
"description": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).",
"id": "GSD-2019-1549",
"references": [
"https://www.suse.com/security/cve/CVE-2019-1549.html",
"https://www.debian.org/security/2019/dsa-4539",
"https://access.redhat.com/errata/RHSA-2020:1840",
"https://access.redhat.com/errata/RHSA-2020:1337",
"https://access.redhat.com/errata/RHSA-2020:1336",
"https://ubuntu.com/security/CVE-2019-1549",
"https://linux.oracle.com/cve/CVE-2019-1549.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2019-1549"
],
"details": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c).",
"id": "GSD-2019-1549",
"modified": "2023-12-13T01:23:51.072317Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "openssl-security@openssl.org",
"DATE_PUBLIC": "2019-09-10",
"ID": "CVE-2019-1549",
"STATE": "PUBLIC",
"TITLE": "Fork Protection"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "OpenSSL",
"version": {
"version_data": [
{
"version_value": "Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)"
}
]
}
}
]
},
"vendor_name": "OpenSSL"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "Matt Caswell"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"lang": "eng",
"value": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)."
}
]
},
"impact": [
{
"lang": "eng",
"url": "https://www.openssl.org/policies/secpolicy.html#Low",
"value": "Low"
}
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"problemtype": {
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}
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"references": {
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{
"name": "FEDORA-2019-d15aac6c4e",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/"
},
{
"name": "FEDORA-2019-d51641f152",
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZN4VVQJ3JDCHGIHV4Y2YTXBYQZ6PWQ7E/"
},
{
"name": "20191001 [SECURITY] [DSA 4539-1] openssl security update",
"refsource": "BUGTRAQ",
"url": "https://seclists.org/bugtraq/2019/Oct/1"
},
{
"name": "DSA-4539",
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},
{
"name": "USN-4376-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4376-1/"
},
{
"name": "https://www.oracle.com/security-alerts/cpuapr2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpujul2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujul2020.html"
},
{
"name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
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"url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
},
{
"name": "https://www.openssl.org/news/secadv/20190910.txt",
"refsource": "CONFIRM",
"url": "https://www.openssl.org/news/secadv/20190910.txt"
},
{
"name": "https://security.netapp.com/advisory/ntap-20190919-0002/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20190919-0002/"
},
{
"name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
"refsource": "CONFIRM",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be"
},
{
"name": "https://support.f5.com/csp/article/K44070243",
"refsource": "CONFIRM",
"url": "https://support.f5.com/csp/article/K44070243"
},
{
"name": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS",
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"url": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "1.1.1c",
"versionStartIncluding": "1.1.1",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "openssl-security@openssl.org",
"ID": "CVE-2019-1549"
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"description": {
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"value": "OpenSSL 1.1.1 introduced a rewritten random number generator (RNG). This was intended to include protection in the event of a fork() system call in order to ensure that the parent and child processes did not share the same RNG state. However this protection was not being used in the default case. A partial mitigation for this issue is that the output from a high precision timer is mixed into the RNG state so the likelihood of a parent and child process sharing state is significantly reduced. If an application already calls OPENSSL_init_crypto() explicitly using OPENSSL_INIT_ATFORK then this problem does not occur at all. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c)."
}
]
},
"problemtype": {
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"description": [
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"value": "CWE-330"
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"references": {
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{
"name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=1b0fe00e2704b5e20334a16d3c9099d1ba2ef1be",
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"tags": [
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"name": "https://www.openssl.org/news/secadv/20190910.txt",
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{
"name": "https://support.f5.com/csp/article/K44070243",
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},
{
"name": "FEDORA-2019-d15aac6c4e",
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"tags": [],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GY6SNRJP2S7Y42GIIDO3HXPNMDYN2U3A/"
},
{
"name": "FEDORA-2019-d51641f152",
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},
{
"name": "20191001 [SECURITY] [DSA 4539-1] openssl security update",
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{
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{
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"url": "https://support.f5.com/csp/article/K44070243?utm_source=f5support\u0026amp;utm_medium=RSS"
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{
"name": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html",
"refsource": "MISC",
"tags": [],
"url": "https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2020.html",
"refsource": "MISC",
"tags": [],
"url": "https://www.oracle.com/security-alerts/cpujan2020.html"
},
{
"name": "N/A",
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"tags": [],
"url": "https://www.oracle.com/security-alerts/cpuapr2020.html"
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{
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{
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"tags": [],
"url": "https://www.oracle.com/security-alerts/cpujul2020.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
"refsource": "MISC",
"tags": [],
"url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
},
"lastModifiedDate": "2020-10-20T22:15Z",
"publishedDate": "2019-09-10T17:15Z"
}
}
}
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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.
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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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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
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