certfr_avis - CERTFR-2017-AVI-378

CERTFR-2017-AVI-378

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité a été découverte dans Citrix XenServer. Elle permet à un attaquant de provoquer 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
Citrix	XenServer	Citrix XenServer 7.1 LTSR CU1 sans le dernier correctif de sécurité
Citrix	XenServer	Citrix XenServer 7.2 sans le dernier correctif de sécurité
Citrix	XenServer	Citrix XenServer 7.0 sans le dernier correctif de sécurité
Citrix	XenServer	Citrix XenServer 6.5 SP1 sans le dernier correctif de sécurité
Citrix	XenServer	Citrix XenServer 7.1 LTSR sans le dernier correctif de sécurité

References

Title

Publication Time

CVE-2017-15597 (GCVE-0-2017-15597)

Vulnerability from cvelistv5 – Published: 2017-10-30 14:00 – Updated: 2024-08-05 19:57

Summary

An issue was discovered in Xen through 4.9.x. Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns out wrong. A malicious guest administrator can cause hypervisor memory corruption, most likely resulting in host crash and a Denial of Service. Privilege escalation and information leaks cannot be ruled out.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://xenbits.xen.org/xsa/advisory-236.html	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/101564	vdb-entryx_refsource_BID
	http://www.openwall.com/lists/oss-security/2017/10/24/3	mailing-listx_refsource_MLIST
	https://www.debian.org/security/2017/dsa-4050	vendor-advisoryx_refsource_DEBIAN
	https://support.citrix.com/article/CTX229057	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1039653	vdb-entryx_refsource_SECTRACK
	https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST

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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.

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