Permissions, Privileges, and Access Controls in Xen - CVE-2015-2151
Published: March 12, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32430
CSH Severity: Low
CVSS v4.0: 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
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability 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.
How to mitigate CVE-2015-2151
Install update from vendor's website.
Sources
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152588.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152776.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html
- http://support.citrix.com/article/CTX200484
- http://www.debian.org/security/2015/dsa-3181
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/73015
- http://www.securitytracker.com/id/1031806
- http://www.securitytracker.com/id/1031903
- http://www1.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
- http://xenbits.xen.org/xsa/advisory-123.html
- https://security.gentoo.org/glsa/201604-03