CVE-2015-8104
virt: guest to host DoS by triggering an infinite loop in microcode via #DB exception
Severity Score
4.7
*CVSS v2
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c.
El subsistema KVM en el kernel Linux hasta la versión 4.2.6, y Xen 4.3.x hasta la versión 4.6.x permite a usuarios del SO invitados causar una denegación de servicio (panic en el host del SO o cuelgue) desencadenando muchas excepciones #DB (también conocidas como Debug), relacionadas con svm.c.
It was found that the x86 ISA (Instruction Set Architecture) is prone to a denial of service attack inside a virtualized environment in the form of an infinite loop in the microcode due to the way (sequential) delivering of benign exceptions such as #DB (debug exception) is handled. A privileged user inside a guest could use this flaw to create denial of service conditions on the host kernel.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2015-11-09 CVE Reserved
- 2015-11-16 CVE Published
- 2024-02-16 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-399: Resource Management Errors
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (44)
| URL | Tag | Source |
|---|---|---|
| http://support.citrix.com/article/CTX202583 | Third Party Advisory | |
| http://support.citrix.com/article/CTX203879 | Third Party Advisory | |
| http://www.openwall.com/lists/oss-security/2015/11/10/5 | Mailing List |
|
| http://www.openwall.com/lists/oss-security/2023/10/10/4 | Mailing List |
|
| http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html | Third Party Advisory |
|
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html | Third Party Advisory |
|
| http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html | Third Party Advisory |
|
| http://www.securityfocus.com/bid/77524 | Third Party Advisory | |
| http://www.securityfocus.com/bid/91787 | Third Party Advisory | |
| http://www.securitytracker.com/id/1034105 | Third Party Advisory | |
| https://kb.juniper.net/JSA10783 | Third Party Advisory |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.3.0 Search vendor "Xen" for product "Xen" and version "4.3.0" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.3.1 Search vendor "Xen" for product "Xen" and version "4.3.1" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.3.2 Search vendor "Xen" for product "Xen" and version "4.3.2" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.3.3 Search vendor "Xen" for product "Xen" and version "4.3.3" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.3.4 Search vendor "Xen" for product "Xen" and version "4.3.4" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.4.0 Search vendor "Xen" for product "Xen" and version "4.4.0" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.4.1 Search vendor "Xen" for product "Xen" and version "4.4.1" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.4.2 Search vendor "Xen" for product "Xen" and version "4.4.2" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.4.3 Search vendor "Xen" for product "Xen" and version "4.4.3" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.5.0 Search vendor "Xen" for product "Xen" and version "4.5.0" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.5.1 Search vendor "Xen" for product "Xen" and version "4.5.1" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.5.2 Search vendor "Xen" for product "Xen" and version "4.5.2" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.6.0 Search vendor "Xen" for product "Xen" and version "4.6.0" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.6.1 Search vendor "Xen" for product "Xen" and version "4.6.1" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.6.2 Search vendor "Xen" for product "Xen" and version "4.6.2" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.6.4 Search vendor "Xen" for product "Xen" and version "4.6.4" | - |
Affected
| ||||||
| Xen Search vendor "Xen" | Xen Search vendor "Xen" for product "Xen" | 4.6.5 Search vendor "Xen" for product "Xen" and version "4.6.5" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Solaris Search vendor "Oracle" for product "Solaris" | 11.3 Search vendor "Oracle" for product "Solaris" and version "11.3" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox" | >= 4.0.0 <= 4.0.34 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 4.0.0 <= 4.0.34" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox" | >= 4.1.0 <= 4.1.42 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 4.1.0 <= 4.1.42" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox" | >= 4.2.0 <= 4.2.34 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 4.2.0 <= 4.2.34" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox" | >= 4.3.0 <= 4.3.35 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 4.3.0 <= 4.3.35" | - |
Affected
| ||||||
| Oracle Search vendor "Oracle" | Vm Virtualbox Search vendor "Oracle" for product "Vm Virtualbox" | >= 5.0.0 <= 5.0.13 Search vendor "Oracle" for product "Vm Virtualbox" and version " >= 5.0.0 <= 5.0.13" | - |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | <= 4.2.3 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.2.3" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 15.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.04" | - |
Affected
| ||||||