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CERTFR-2019-AVI-606
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans OpenBSD. Elles permettent à un attaquant de provoquer un contournement de la politique de sécurité et une élévation de privilèges.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "OpenBSD 6.6 sans le dernier correctif de s\u00e9curit\u00e9",
"product": {
"name": "OpenBSD",
"vendor": {
"name": "OpenBSD",
"scada": false
}
}
},
{
"description": "OpenBSD 6.5 sans le dernier correctif de s\u00e9curit\u00e9",
"product": {
"name": "OpenBSD",
"vendor": {
"name": "OpenBSD",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2019-19521",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19521"
},
{
"name": "CVE-2019-19522",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19522"
},
{
"name": "CVE-2019-19520",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19520"
},
{
"name": "CVE-2019-19519",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-19519"
}
],
"initial_release_date": "2019-12-05T00:00:00",
"last_revision_date": "2019-12-05T00:00:00",
"links": [],
"reference": "CERTFR-2019-AVI-606",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2019-12-05T00:00:00.000000"
}
],
"risks": [
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans OpenBSD. Elles\npermettent \u00e0 un attaquant de provoquer un contournement de la politique\nde s\u00e9curit\u00e9 et une \u00e9l\u00e9vation de privil\u00e8ges.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans OpenBSD",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 OpenBSD 6.6 du 04 d\u00e9cembre 2019",
"url": "https://www.openbsd.org/errata66.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 OpenBSD 6.5 du 04 d\u00e9cembre 2019",
"url": "https://www.openbsd.org/errata65.html"
}
]
}
CVE-2019-19519 (GCVE-0-2019-19519)
Vulnerability from cvelistv5
Published
2019-12-04 23:34
Modified
2024-08-05 02:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In OpenBSD 6.6, local users can use the su -L option to achieve any login class (often excluding root) because there is a logic error in the main function in su/su.c.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
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CVE-2019-19520 (GCVE-0-2019-19520)
Vulnerability from cvelistv5
Published
2019-12-04 23:34
Modified
2024-08-05 02:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a LIBGL_DRIVERS_PATH environment variable, because xenocara/lib/mesa/src/loader/loader.c mishandles dlopen.
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2019-19521 (GCVE-0-2019-19521)
Vulnerability from cvelistv5
Published
2019-12-04 23:33
Modified
2024-08-05 02:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
libc in OpenBSD 6.6 allows authentication bypass via the -schallenge username, as demonstrated by smtpd, ldapd, or radiusd. This is related to gen/auth_subr.c and gen/authenticate.c in libc (and login/login.c and xenocara/app/xenodm/greeter/verify.c).
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2019-19522 (GCVE-0-2019-19522)
Vulnerability from cvelistv5
Published
2019-12-04 23:33
Modified
2024-08-05 02:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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