Race condition in xen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-15588
CWE-ID CWE-362
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Subscribe 		xen (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Race condition

EUVDB-ID: #VU9446

Risk: Low

CVSSv3.1: 8.3 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-15588

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to gain elevated privileges on the target system.

The weakness exists due to page type release race. An adjacent attacker can supply a stale TLB entry, trigger race condition and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.5.0-r0 - 4.6.6-r1

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=0fab8db7500d0c5f6eb28d74ecfc5d9e4fd379e3
http://git.alpinelinux.org/aports/commit/?id=eac7d0a6acaaa7d2ab03a2ce4bfe967a6bba9036
http://git.alpinelinux.org/aports/commit/?id=dc1cbe038e2494f5fa124e3d2942987672acafa6


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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