certfr_avis - CERTFR-2019-AVI-606

CERTFR-2019-AVI-606

Vulnerability from certfr_avis - Published: - Updated:

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).

None

Impacted products

	Vendor	Product	Description
	OpenBSD	OpenBSD	OpenBSD 6.6 sans le dernier correctif de sécurité
	OpenBSD	OpenBSD	OpenBSD 6.5 sans le dernier correctif de sécurité

References

Title

Publication Time

Tags

Bulletin de sécurité OpenBSD 6.6 du 04 décembre 2019	None	vendor-advisory
Bulletin de sécurité OpenBSD 6.5 du 04 décembre 2019	None	vendor-advisory

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JSON

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{
  "$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"
    }
  ],
  "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-2019-19520 (GCVE-0-2019-19520)

Vulnerability from cvelistv5 – Published: 2019-12-04 23:34 – Updated: 2024-08-05 02:16

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.openwall.com/lists/oss-security/2019/…	x_refsource_MISC
	https://www.openbsd.org/errata66.html	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2019/12/04/6	mailing-listx_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2019/12/04/5	mailing-listx_refsource_MLIST
	https://seclists.org/bugtraq/2019/Dec/8	mailing-listx_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/155572/Qualy…	x_refsource_MISC
	http://seclists.org/fulldisclosure/2019/Dec/14	mailing-listx_refsource_FULLDISC

Show details on NVD website

JSON

To clipboard

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CVE-2019-19519 (GCVE-0-2019-19519)

Vulnerability from cvelistv5 – Published: 2019-12-04 23:34 – Updated: 2024-08-05 02:16

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.openwall.com/lists/oss-security/2019/…	x_refsource_MISC
	https://www.openbsd.org/errata66.html	x_refsource_MISC
	https://github.com/openbsd/src/blob/2dfc98f42e117…	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2019/12/04/5	mailing-listx_refsource_MLIST
	https://seclists.org/bugtraq/2019/Dec/8	mailing-listx_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/155572/Qualy…	x_refsource_MISC
	http://seclists.org/fulldisclosure/2019/Dec/14	mailing-listx_refsource_FULLDISC

Show details on NVD website

JSON

To clipboard

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CVE-2019-19522 (GCVE-0-2019-19522)

Vulnerability from cvelistv5 – Published: 2019-12-04 23:33 – Updated: 2024-08-05 02:16

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.openwall.com/lists/oss-security/2019/…	x_refsource_MISC
	https://www.openbsd.org/errata66.html	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2019/12/04/5	mailing-listx_refsource_MLIST
	https://seclists.org/bugtraq/2019/Dec/8	mailing-listx_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/155572/Qualy…	x_refsource_MISC
	http://seclists.org/fulldisclosure/2019/Dec/14	mailing-listx_refsource_FULLDISC

Show details on NVD website

JSON

To clipboard

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CVE-2019-19521 (GCVE-0-2019-19521)

Vulnerability from cvelistv5 – Published: 2019-12-04 23:33 – Updated: 2024-08-05 02:16

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).

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.openwall.com/lists/oss-security/2019/…	x_refsource_MISC
	https://www.openbsd.org/errata66.html	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2019/12/04/6	mailing-listx_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2019/12/04/5	mailing-listx_refsource_MLIST
	https://seclists.org/bugtraq/2019/Dec/8	mailing-listx_refsource_BUGTRAQ
	http://packetstormsecurity.com/files/155572/Qualy…	x_refsource_MISC
	http://seclists.org/fulldisclosure/2019/Dec/14	mailing-listx_refsource_FULLDISC

Show details on NVD website

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Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CERTFR-2019-AVI-606

Solution

CVE-2019-19520 (GCVE-0-2019-19520)

CVE-2019-19519 (GCVE-0-2019-19519)

CVE-2019-19522 (GCVE-0-2019-19522)

CVE-2019-19521 (GCVE-0-2019-19521)

Tags

Sightings

Nomenclature