Privilege escalation in xen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-15592
CWE-ID CWE-264
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) Privilege escalation

EUVDB-ID: #VU9449

Risk: Low

CVSSv4.0: 5.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-15592

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

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to cause DoS conditions or gain elevated privileges on the target system.

The weakness exists due to mishandling of self-linear shadow mappings for translated guests. An adjacent attacker can supply self-linear shadow mappings and cause the hypervisor to crash or possibly gain 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

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 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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