Detections
Analytics
OracleVM 3.3 : xen (OVMSA-2015-0141)
high Nessus Plugin ID 86669
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Synopsis
The remote OracleVM host is missing one or more security updates.Description
The remote OracleVM system is missing necessary patches to address critical security updates :- x86: rate-limit logging in do_xen[oprof,pmu]_op Some of the sub-ops are acessible to all guests, and hence should be rate-limited. In the xenoprof case, just like for XSA-146, include them only in debug builds. Since the vPMU code is rather new, allow them to be always present, but downgrade them to (rate limited) guest messages. This is XSA-152. (CVE-2015-7971)
- xenoprof: free domain's vcpu array This was overlooked in fb442e2171 ('x86_64: allow more vCPU-s per guest').
This is XSA-151. (CVE-2015-7969)
- x86: guard against undue super page PTE creation When optional super page support got added (commit bd1cd81d64 'x86: PV support for hugepages'), two adjustments were missed: mod_l2_entry needs to consider the PSE and RW bits when deciding whether to use the fast path, and the PSE bit must not be removed from L2_DISALLOW_MASK unconditionally. This is XSA-148. (CVE-2015-7835)
Solution
Update the affected xen / xen-tools packages.See Also
Plugin Details
Severity: High
ID: 86669
File Name: oraclevm_OVMSA-2015-0141.nasl
Version: 2.7
Type: local
Family: OracleVM Local Security Checks
Published: 10/30/2015
Updated: 1/4/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.5
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:oracle:vm:xen, p-cpe:/a:oracle:vm:xen-tools, cpe:/o:oracle:vm_server:3.3
Required KB Items: Host/local_checks_enabled, Host/OracleVM/release, Host/OracleVM/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/29/2015
Vulnerability Publication Date: 10/30/2015