Citrix Xen 3.x Linux Kernel xen_iret numeric error

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.
8.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Citrix Xen 3.x. This affects the function xen_iret of the component Linux Kernel. Such manipulation leads to numeric error. This vulnerability is traded as CVE-2013-0228. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Citrix Xen 3.x (Connectivity Software). Affected by this issue is the function xen_iret of the component Linux Kernel. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The xen_iret function in arch/x86/xen/xen-asm_32.S in the Linux kernel before 3.7.9 on 32-bit Xen paravirt_ops platforms does not properly handle an invalid value in the DS segment register, which allows guest OS users to gain guest OS privileges via a crafted application.

The weakness was shared 02/13/2013 with Xen as not defined mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2013-0228 since 12/06/2012. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 68789 (Oracle Linux 6 : kernel (ELSA-2013-0630)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195400 (Ubuntu Security Notification for Linux-ec2 Vulnerabilities (USN-1808-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82067), Tenable (68789), SecurityFocus (BID 57940†), OSVDB (90186†) and Secunia (SA52071†). The entries VDB-63765 and VDB-65957 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.3
VulDB Temp Score: 8.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 68789
Nessus Name: Oracle Linux 6 : kernel (ELSA-2013-0630)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881690
OpenVAS Name: CentOS Update for kernel CESA-2013:0630 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

12/06/2012 🔍
02/13/2013 +69 days 🔍
02/13/2013 +0 days 🔍
02/13/2013 +0 days 🔍
02/13/2013 +0 days 🔍
02/18/2013 +5 days 🔍
03/01/2013 +11 days 🔍
03/06/2013 +5 days 🔍
07/12/2013 +128 days 🔍
05/05/2021 +2854 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: seclists.org
Organization: Xen
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-0228 (🔍)
GCVE (CVE): GCVE-0-2013-0228
GCVE (VulDB): GCVE-100-7724

OVAL: 🔍

X-Force: 82067
SecurityFocus: 57940 - Linux Kernel CVE-2013-0228 Local Privilege Escalation Vulnerability
Secunia: 52071 - Xen "xen_iret()" IRET Handling Vulnerability, Less Critical
OSVDB: 90186
Vulnerability Center: 38643 - Linux Kernel Before 3.7.9 on 32-bit Xen Paravirt_ops Platforms Remote Guest Privileges Elevation, Medium

See also: 🔍

Entryinfo

Created: 02/18/2013 12:46
Updated: 05/05/2021 09:31
Changes: 02/18/2013 12:46 (81), 04/25/2017 11:35 (5), 05/05/2021 09:31 (3)
Complete: 🔍
Committer: roga
Cache ID: 216:87D:103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!