Linux Foundation Xen up to 4.1.6.1 Memory Allocation memory corruption

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3.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Foundation Xen. The impacted element is an unknown function of the component Memory Allocation Handler. This manipulation causes memory corruption. This vulnerability is registered as CVE-2014-1892. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Linux Foundation Xen (Virtualization Software) and classified as problematic. Affected by this vulnerability is an unknown code of the component Memory Allocation Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

Xen 3.3 through 4.1, when XSM is enabled, allows local users to cause a denial of service via vectors related to a "large memory allocation," a different vulnerability than CVE-2014-1891, CVE-2014-1893, and CVE-2014-1894.

The weakness was published 02/10/2014 by Matthew Daley as XSA-84 as confirmed mailinglist post (Mailing List). It is possible to read the advisory at xenbits.xenproject.org. This vulnerability is known as CVE-2014-1892 since 02/07/2014. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 79529 (OracleVM 3.2 : xen (OVMSA-2014-0001)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166935 (OpenSuSE Security Update for xen (openSUSE-SU-2014:0483-1)).

Applying the patch xsa84-4.1.patch/xsa84-4.2.patch/xsa84-unstable-4.3.patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (91310), Tenable (79529), SecurityFocus (BID 65419†) and Vulnerability Center (SBV-43672†). Similar entries are available at VDB-11164, VDB-12064, VDB-12235 and VDB-12236. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79529
Nessus Name: OracleVM 3.2 : xen (OVMSA-2014-0001)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867511
OpenVAS Name: Fedora Update for xen FEDORA-2014-2170
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: xsa84-4.1.patch/xsa84-4.2.patch/xsa84-unstable-4.3.patch

Timelineinfo

02/06/2014 🔍
02/06/2014 +0 days 🔍
02/07/2014 +1 days 🔍
02/10/2014 +3 days 🔍
02/27/2014 +17 days 🔍
03/19/2014 +20 days 🔍
04/01/2014 +13 days 🔍
11/26/2014 +239 days 🔍
06/09/2021 +2387 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-84
Researcher: Matthew Daley
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1892 (🔍)
GCVE (CVE): GCVE-0-2014-1892
GCVE (VulDB): GCVE-100-12415

OVAL: 🔍

X-Force: 91310 - Xen FLASK_SETBOOL denial of service, Medium Risk
SecurityFocus: 65419 - Xen XSM/Flask Hypercalls Local Integer Overflow Vulnerability
Vulnerability Center: 43672 - Xen 3.3 - 4.1 Local DoS and Information Disclosure Vulnerability due to Integer Overflow in Flask Hypercalls, Low

See also: 🔍

Entryinfo

Created: 02/27/2014 08:00
Updated: 06/09/2021 21:10
Changes: 02/27/2014 08:00 (78), 05/23/2017 08:53 (4), 06/09/2021 21:10 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:498:103

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