Vulnerability Name:

CVE-2011-1780 (CCN-68423)

Assigned:2011-07-07
Published:2011-07-07
Updated:2014-01-08
Summary:The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
CVSS v3 Severity:4.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:6.1 Medium (CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
4.5 Medium (Temporal CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
2.1 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
1.6 Low (CCN Temporal CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
6.1 Medium (REDHAT CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C)
4.5 Medium (REDHAT Temporal CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2011-1780

Source: CCN
Type: RHSA-2011-1065
Important: Red Hat Enterprise Linux 5.7 kernel security and bug fix update

Source: REDHAT
Type: UNKNOWN
RHSA-2011:1065

Source: CCN
Type: RHSA-2011-1163
Important: kernel security and bug fix update

Source: REDHAT
Type: UNKNOWN
RHSA-2011:1163

Source: CCN
Type: SA45889
OpenVZ update for kernel

Source: CCN
Type: SA53555
Avaya Communication Server 1000 Multiple Vulnerabilities

Source: CCN
Type: OpenVZ Web page
OpenVZ

Source: MLIST
Type: UNKNOWN
[oss-security] 20110707 CVE-2011-1780, CVE-2011-1936, kernel/xen issues

Source: CCN
Type: OSVDB ID: 74656
Linux Kernel Xen Hypervisor Implementation SMP Guest Malicious User Process Local DoS

Source: CCN
Type: BID-48610
Xen Instruction Emulation During VM Exits Denial of Service Vulnerabilities

Source: CCN
Type: XenSource Web site
Xen

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=702657

Source: CCN
Type: Red Hat Bugzilla Bug 702657
(CVE-2011-1780) CVE-2011-1780 kernel: xen: svm: insufficiencies in handling emulated instructions during vm exits

Source: XF
Type: UNKNOWN
xen-instruction-emulation-dos(68423)

Source: CCN
Type: ASA-2011-258
kernel security and bug fix update (RHSA-2011-1065 and RHSA-2011-1163)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:xen:xen:3.0.3:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:5::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:5::server:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:xensource:xen:*:*:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:5:*:client:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_eus:5.6.z::server:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_long_life:5.6:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.mitre.oval:def:22877
    P
    		ELSA-2011:1065: Oracle Linux 5.x.7 kernel security and bug fix update (Important)
    2014-05-26
    oval:org.mitre.oval:def:21936
    P
    		RHSA-2011:1065: Red Hat Enterprise Linux 5.7 kernel security and bug fix update (Important)
    2014-02-24
    oval:org.mitre.oval:def:20605
    V
    		VMware ESXi and ESX updates to third party library and ESX Service Console
    2014-01-20
    oval:com.ubuntu.precise:def:20111780000
    V
    		CVE-2011-1780 on Ubuntu 12.04 LTS (precise) - medium.
    2014-01-07
    oval:com.redhat.rhsa:def:20111163
    P
    		RHSA-2011:1163: kernel security and bug fix update (Important)
    2011-08-16
    oval:com.redhat.rhsa:def:20111065
    P
    		RHSA-2011:1065: Red Hat Enterprise Linux 5.7 kernel security and bug fix update (Important)
    2011-07-21
    BACK
    xen xen 3.0.3
    xensource xen *
    redhat enterprise linux 5
    redhat enterprise linux 5
    redhat enterprise linux eus 5.6.z
    redhat enterprise linux long life 5.6