Input validation error in xen (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-2270
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 xen (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU32324

Risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:U/U:Green]

CVE-ID: CVE-2016-2270

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote privileged user to a crash the entire system.

Xen 4.6.x and earlier allows local guest administrators to cause a denial of service (host reboot) via vectors related to multiple mappings of MMIO pages with different cachability settings.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.3.4-r1

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=08e33d0f02c353d47b25b57f4f56a6ba9918fe32
https://git.alpinelinux.org/aports/commit/?id=7b7ecda52be8a1674088597c992f7faa3ff38f97
https://git.alpinelinux.org/aports/commit/?id=5c6f6540495a819f4ee6722fa9299f96060b713f
https://git.alpinelinux.org/aports/commit/?id=9587e8ddfc6cb1922e75282409fec378bee93a86
https://git.alpinelinux.org/aports/commit/?id=ccba2d08cc9d7de25cfa2eccbe943cb2e4ced400


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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