Permissions, Privileges, and Access Controls in Xen



| Updated: 2020-07-28
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-2151
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Xen
Server applications / Virtualization software

Vendor Xen Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU32430

Risk: Low

CVSSv4.0: 6.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-2151

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 3.2.0 - 3.2.3

CPE2.3 External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html
https://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
https://support.citrix.com/article/CTX200484
https://www.debian.org/security/2015/dsa-3181
https://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
https://www.securityfocus.com/bid/73015
https://www.securitytracker.com/id/1031806
https://www.securitytracker.com/id/1031903
https://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
https://xenbits.xen.org/xsa/advisory-123.html
https://security.gentoo.org/glsa/201604-03


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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