certfr_avis - CERTFR-2017-AVI-214

CERTFR-2017-AVI-214

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité a été corrigée dans Samba. Elle permet à un attaquant de provoquer un contournement de la politique de sécurité.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Samba toutes versions 4.0.0 et postérieures utilisant une version embarquée de Heimdal Kerberos

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

CVE-2017-11103 (GCVE-0-2017-11103)

Vulnerability from cvelistv5 – Published: 2017-07-13 13:00 – Updated: 2024-08-05 17:57

Summary

Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://support.apple.com/HT208221	x_refsource_CONFIRM
	http://www.debian.org/security/2017/dsa-3912	vendor-advisoryx_refsource_DEBIAN
	https://support.apple.com/HT208144	x_refsource_CONFIRM
	https://www.orpheus-lyre.info/	x_refsource_MISC
	https://www.freebsd.org/security/advisories/FreeB…	vendor-advisoryx_refsource_FREEBSD
	http://www.securityfocus.com/bid/99551	vdb-entryx_refsource_BID
	http://www.securitytracker.com/id/1039427	vdb-entryx_refsource_SECTRACK
	https://www.samba.org/samba/security/CVE-2017-111…	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1038876	vdb-entryx_refsource_SECTRACK
	https://support.apple.com/HT208112	x_refsource_CONFIRM
	https://github.com/heimdal/heimdal/releases/tag/h…	x_refsource_CONFIRM
	http://www.h5l.org/advisories.html?show=2017-07-11	x_refsource_CONFIRM

Show details on NVD website

JSON

To clipboard

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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