Executive Summary
| Summary | |
|---|---|
| Title | xen security update |
| Informations | |||
|---|---|---|---|
| Name | DSA-3663 | First vendor Publication | 2016-09-09 |
| Vendor | Debian | Last vendor Modification | 2016-09-09 |
| Severity (Vendor) | N/A | Revision | 1 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.2 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2016-7092 (XSA-185) Jeremie Boutoille of Quarkslab and Shangcong Luan of Alibaba discovered a flaw in the handling of L3 pagetable entries, allowing a malicious 32-bit PV guest administrator can escalate their privilege to that of the host. CVE-2016-7094 (XSA-187) x86 HVM guests running with shadow paging use a subset of the x86 emulator to handle the guest writing to its own pagetables. Andrew Cooper of Citrix discovered that there are situations a guest can provoke which result in exceeding the space allocated for internal state. A malicious HVM guest administrator can cause Xen to fail a bug check, causing a denial of service to the host. CVE-2016-7154 (XSA-188) Mikhail Gorobets of Advanced Threat Research, Intel Security discovered a use after free flaw in the FIFO event channel code. A malicious guest administrator can crash the host, leading to a denial of service. Arbitrary code execution (and therefore privilege escalation), and information leaks, cannot be excluded. For the stable distribution (jessie), these problems have been fixed in version 4.4.1-9+deb8u7. We recommend that you upgrade your xen packages. |
Original Source
| Url : http://www.debian.org/security/2016/dsa-3663 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 33 % | CWE-416 | Use After Free |
| 33 % | CWE-264 | Permissions, Privileges, and Access Controls |
| 33 % | CWE-119 | Failure to Constrain Operations within the Bounds of a Memory Buffer |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2016-12-05 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_4bf57137ba4d11e6ae1b002590263bf5.nasl - Type : ACT_GATHER_INFO |
| 2016-12-05 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_4aae54beba4d11e6ae1b002590263bf5.nasl - Type : ACT_GATHER_INFO |
| 2016-12-05 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_45ca25b5ba4d11e6ae1b002590263bf5.nasl - Type : ACT_GATHER_INFO |
| 2016-11-15 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201611-09.nasl - Type : ACT_GATHER_INFO |
| 2016-11-15 | Name : The remote Fedora host is missing a security update. File : fedora_2016-1d8429b89f.nasl - Type : ACT_GATHER_INFO |
| 2016-11-07 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2725-1.nasl - Type : ACT_GATHER_INFO |
| 2016-10-26 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2533-1.nasl - Type : ACT_GATHER_INFO |
| 2016-10-26 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2528-1.nasl - Type : ACT_GATHER_INFO |
| 2016-10-13 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2507-1.nasl - Type : ACT_GATHER_INFO |
| 2016-10-12 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2016-1169.nasl - Type : ACT_GATHER_INFO |
| 2016-10-12 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2016-1170.nasl - Type : ACT_GATHER_INFO |
| 2016-10-10 | Name : The remote SUSE host is missing one or more security updates. File : suse_SU-2016-2473-1.nasl - Type : ACT_GATHER_INFO |
| 2016-09-29 | Name : The remote Xen hypervisor installation is missing a security update. File : xen_server_XSA-187.nasl - Type : ACT_GATHER_INFO |
| 2016-09-22 | Name : The remote Fedora host is missing a security update. File : fedora_2016-1c3374bcb9.nasl - Type : ACT_GATHER_INFO |
| 2016-09-20 | Name : The remote host is affected by multiple vulnerabilities. File : citrix_xenserver_CTX216071.nasl - Type : ACT_GATHER_INFO |
| 2016-09-15 | Name : The remote Fedora host is missing a security update. File : fedora_2016-7d2c67d1f5.nasl - Type : ACT_GATHER_INFO |
| 2016-09-12 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-3663.nasl - Type : ACT_GATHER_INFO |
| 2016-09-12 | Name : The remote Debian host is missing a security update. File : debian_DLA-614.nasl - Type : ACT_GATHER_INFO |
| 2016-09-09 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2016-0102.nasl - Type : ACT_GATHER_INFO |
| 2016-09-09 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2016-0104.nasl - Type : ACT_GATHER_INFO |
| 2016-09-09 | Name : The remote OracleVM host is missing one or more security updates. File : oraclevm_OVMSA-2016-0103.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2017-01-07 09:27:29 |
|
| 2016-09-13 13:23:56 |
|
| 2016-09-09 09:22:37 |
|
