Information disclosure in xen (Alpine package)

1) Information disclosure

EUVDB-ID: #VU32429

Risk: Low

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

CVE-ID: CVE-2015-2045

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.

The HYPERVISOR_xen_version hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.4.2-r1 - 4.4.4-r1

CPE2.3

• cpe:2.3:a:alpine:xen_alpine_package:4.4.2-r1:*:*:*:*:alpine_linux:*:3.1
• cpe:2.3:a:alpine:xen_alpine_package:4.4.2-r2:*:*:*:*:alpine_linux:*:3.1
• cpe:2.3:a:alpine:xen_alpine_package:4.4.2-r3:*:*:*:*:alpine_linux:*:3.1

External links

https://git.alpinelinux.org/aports/commit/?id=850840a2934c957dceba8fddf438d070edce71a4
https://git.alpinelinux.org/aports/commit/?id=a824d445bbe2abb22ca2362898b7e72054639120

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.