Race condition in xen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-15597
CWE-ID CWE-362
Exploitation vector Local 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 low risk vulnerability.

1) Race condition

EUVDB-ID: #VU8923

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-15597

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

Exploit availability: No

Description

The vulnerability allows an adjacent administrative attacker to cause DoS condition on the target system.

The weakness exists due to a race condition in certain grant copy operations. A local attacker can trigger a memory corruption error in the hypervisor and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

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

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


Q & A

Can this vulnerability be exploited remotely?

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