Resource management error in xen (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-17348
CWE-ID CWE-399
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 medium risk vulnerability.

1) Resource management error

EUVDB-ID: #VU17899

Risk: Medium

CVSSv4.0: 5.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:U/U:Green]

CVE-ID: CVE-2019-17348

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient TLB flushing when using PCID on 64-bit x86 PV guest systems. A local user with access to guest operating system can use a specially crafted program to crash the Xen host.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.7.6-r0 - 4.11.4-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=e42bcd9d2c39e861c980adebf91418ddbe72bd21


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated 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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