Debian DSA-2010-1 : kvm - privilege escalation/denial of service

medium Nessus Plugin ID 45026

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several local vulnerabilities have been discovered in kvm, a full virtualization system. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2010-0298 CVE-2010-0306 Gleb Natapov discovered issues in the KVM subsystem where missing permission checks (CPL/IOPL) permit a user in a guest system to denial of service a guest (system crash) or gain escalated privileges with the guest.

- CVE-2010-0309 Marcelo Tosatti fixed an issue in the PIT emulation code in the KVM subsystem that allows privileged users in a guest domain to cause a denial of service (crash) of the host system.

- CVE-2010-0419 Paolo Bonzini found a bug in KVM that can be used to bypass proper permission checking while loading segment selectors. This potentially allows privileged guest users to execute privileged instructions on the host system.

Solution

Upgrade the kvm package.

For the stable distribution (lenny), this problem has been fixed in version 72+dfsg-5~lenny5.

See Also

https://security-tracker.debian.org/tracker/CVE-2010-0298

https://security-tracker.debian.org/tracker/CVE-2010-0306

https://security-tracker.debian.org/tracker/CVE-2010-0309

https://security-tracker.debian.org/tracker/CVE-2010-0419

https://www.debian.org/security/2010/dsa-2010

Plugin Details

Severity: Medium

ID: 45026

File Name: debian_DSA-2010.nasl

Version: 1.21

Type: local

Agent: unix

Published: 3/11/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:kvm, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 3/10/2010

Reference Information

CVE: CVE-2010-0298, CVE-2010-0306, CVE-2010-0309, CVE-2010-0419

DSA: 2010

CWE: 16, 264