CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.1 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, was found in XenSource Xen 4.2/4.3/4.4/4.5 (Virtualization Software). This affects some unknown functionality of the component FPU Stack Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was released 12/17/2015 by Jan Beulich with SuSE as XSA-165 as confirmed security advisory (Website). It is possible to read the advisory at xenbits.xen.org. This vulnerability is uniquely identified as CVE-2015-8555 since 12/14/2015. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.
The vulnerability scanner Nessus provides a plugin with the ID 88124 (openSUSE Security Update : xen (openSUSE-2016-34)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168775 (SUSE Enterprise Linux Security update for xen (SUSE-SU-2016:1154-1)).
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at X-Force (109031) and Tenable (88124). Entries connected to this vulnerability are available at 13216, 13276, 13279 and 13280.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.7VulDB Meta Temp Score: 8.1
VulDB Base Score: 8.8
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.6
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 88124
Nessus Name: openSUSE Security Update : xen (openSUSE-2016-34)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 850584
OpenVAS Name: SuSE Update for xen SUSE-SU-2016:1318-1 (xen)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
12/14/2015 🔍12/16/2015 🔍
12/16/2015 🔍
12/17/2015 🔍
12/17/2015 🔍
12/18/2015 🔍
01/24/2016 🔍
02/24/2016 🔍
04/13/2016 🔍
07/01/2022 🔍
Sources
Vendor: citrix.comAdvisory: XSA-165
Researcher: Jan Beulich
Organization: SuSE
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2015-8555 (🔍)
OVAL: 🔍
X-Force: 109031 - Xen FPU stack information disclosure
SecurityTracker: 1034477
Vulnerability Center: 56741 - Xen through 4.6.0 Remote Information Disclosure, Medium
SecurityFocus: 79543 - Xen CVE-2015-8555 Information Disclosure Vulnerability
See also: 🔍
Entry
Created: 12/18/2015 09:59Updated: 07/01/2022 11:08
Changes: 12/18/2015 09:59 (67), 08/23/2018 08:25 (23), 07/01/2022 11:08 (4)
Complete: 🔍
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