Denial of service in xen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-19965
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) Denial of service

EUVDB-ID: #VU16005

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-19965

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

Exploit availability: No

Description

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

The weakness exists due to an error when attempting to use INVPCID with a non-canonical addresses. An adjacent attacker can cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.7.0-r0 - 4.9.3-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=4cafe4f7ac5e95424824e1ef5835b409f1fe48e7
https://git.alpinelinux.org/aports/commit/?id=1d0fe0196f9102c4c9edf2965deb91b142688924
https://git.alpinelinux.org/aports/commit/?id=f39fc76089047b3f9b0e1ec06aecb40cc1ac1786
https://git.alpinelinux.org/aports/commit/?id=b1098f74cfa616c0046ba6c5f2d032ac2f1d8e02
https://git.alpinelinux.org/aports/commit/?id=e28e1495e1510e8a1673d135dc5272813b38a0cf
https://git.alpinelinux.org/aports/commit/?id=3157c8cf385f659174a6d95a9218bc3281359513


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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