CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.3	$0-$5k	0.00

A vulnerability classified as critical has been found in Linux Foundation Xen 3.2.0/3.3.0/4.0.0/4.1.0 (Virtualization Software). Affected is some unknown functionality in the library tools/libxc/xc_dom_bzimageloader.c. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields.

The weakness was shared 08/12/2011 (Website). The advisory is shared for download at lists.xensource.com. This vulnerability is traded as CVE-2011-1583. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/17/2021).

The vulnerability scanner Nessus provides a plugin with the ID 68272 (Oracle Linux 5 : xen (ELSA-2011-0496)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (67368) and Tenable (68272). The entries 58338 and 66000 are related to this item.

Productinfo

Type

• Virtualization Software

Vendor

• Linux Foundation

Name

• Xen

Version

• 3.2.0
• 3.3.0
• 4.0.0
• 4.1.0

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.3

VulDB Base Score: 9.3
VulDB Temp Score: 9.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 68272
Nessus Name: Oracle Linux 5 : xen (ELSA-2011-0496)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70551
OpenVAS Name: Debian Security Advisory DSA 2337-1 (xen)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/05/2011 🔍
05/09/2011 +34 days 🔍
05/17/2011 +8 days 🔍
08/12/2011 +87 days 🔍
08/12/2011 +0 days 🔍
07/12/2013 +700 days 🔍
03/23/2015 +619 days 🔍
11/17/2021 +2431 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: RHSA-2011:0496
Status: Not defined

CVE: CVE-2011-1583 (🔍)
OVAL: 🔍

X-Force: 67368
Vulnerability Center: 31462 - Xen Multiple Privilege Escalation and Denial of Service Vulnerabilities, Medium
SecurityFocus: 47779

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/17/2021 23:31
Changes: 03/23/2015 16:50 (59), 03/22/2017 09:55 (7), 11/17/2021 23:18 (4), 11/17/2021 23:31 (1)
Complete: 🔍

Discussion

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