Fedora 27 update for xen

Published: 2017-10-02 | Updated: 2025-04-24

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-13673 CVE-2017-13672
CWE-ID	CWE-20 CWE-125
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software	Fedora Operating systems & Components / Operating system xen Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper input validation

EUVDB-ID: #VU11818

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-13673

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists in the vga display update in mis-calculated the region for the dirty bitmap snapshot in case split screen mode in the cpu_physical_memory_snapshot_get_dirty function due to assertion failure. An adjacent attacker can cause the service to crash.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

xen: before 4.9.0-11.fc27

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2017-b4329d6ee5

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.

2) Out-of-bounds read

EUVDB-ID: #VU11644