Input validation error in xen (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2012-4538
CWE-ID CWE-20
Exploitation vector Local
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) Input validation error

EUVDB-ID: #VU32735

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/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-2012-4538

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.1.3-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=119185999980a6a6a78506a6b49e1a70ab55ad03
https://git.alpinelinux.org/aports/commit/?id=a11d8b693286b605b2dfa17cbd3556eac2b951a0
https://git.alpinelinux.org/aports/commit/?id=4be65a1c37ff21c3fec2e78bca2dd7b75dee98b9
https://git.alpinelinux.org/aports/commit/?id=22809ecb412e53ecc84ef1213fcdfc3afa124909
https://git.alpinelinux.org/aports/commit/?id=4bd4328e3ebf6e35bc5cb2be9d2904efec0f50e1


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.



###SIDEBAR###