Information disclosure in Xen

1) Information disclosure

EUVDB-ID: #VU8671

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-17046

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to obtain potentially sensitive information.

The weakness exists in ARM systems due to the improper scrubbing of DRAM content during reboots when memory is in disjoint blocks or when the first block isn't at physical address 0. An adjacent attacker gain access to arbitrary data on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Xen: 4.5.0 - 4.9.0

CPE2.3

• cpe:2.3:a:xen_project:xen:4.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:xen_project:xen:4.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:xen_project:xen:4.5.2:*:*:*:*:*:*:*

External links

http://xenbits.xen.org/xsa/advisory-245.html

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.