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.
5.1	$0-$5k	0.00

A vulnerability was found in Linux Foundation Xen up to 3.3.1 (Virtualization Software). It has been classified as problematic. This affects the function hypervisor_callback. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

The hypervisor_callback function in Xen, possibly before 3.4.0, as applied to the Linux kernel 2.6.30-rc4, 2.6.18, and probably other versions allows guest user applications to cause a denial of service (kernel oops) of the guest OS by triggering a segmentation fault in "certain address ranges."

The bug was discovered 05/13/2009. The weakness was presented 05/22/2009 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2009-1758 since 05/21/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 43757 (CentOS 5 : kernel (CESA-2009:1106)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165654 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2009:045)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (50535) and Tenable (43757). See 46707, 44965, 49049 and 48416 for similar entries.

Productinfo

Type

• Virtualization Software

Vendor

• Linux Foundation

Name

• Xen

Version

• 2.0
• 3.0.2
• 3.0.3
• 3.0.4
• 3.1.2
• 3.1.3
• 3.1.4
• 3.2
• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.3.0
• 3.3.1

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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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: 43757
Nessus Name: CentOS 5 : kernel (CESA-2009:1106)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64111
OpenVAS Name: Debian Security Advisory DSA 1809-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

05/13/2009 🔍
05/13/2009 +0 days 🔍
05/14/2009 +1 days 🔍
05/21/2009 +7 days 🔍
05/22/2009 +1 days 🔍
05/22/2009 +0 days 🔍
06/19/2009 +28 days 🔍
06/22/2009 +3 days 🔍
01/06/2010 +198 days 🔍
03/17/2015 +1896 days 🔍
09/06/2019 +1634 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2009-1758 (🔍)
OVAL: 🔍

X-Force: 50535
Vulnerability Center: 22628 - Xen < 3.4.0 Hypervisor Callback Function Local DoS Vulnerability, Low
SecurityFocus: 34957 - Xen 'hypervisor_callback()' Guest Local Denial Of Service Vulnerability
Secunia: 35093
OSVDB: 54474 - CVE-2009-1758 - Xen - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 09/06/2019 14:54
Changes: 03/17/2015 23:38 (75), 09/06/2019 14:54 (7)
Complete: 🔍

Discussion

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