Linux Foundation Xen up to 25588 input validation

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Foundation Xen up to 25588. This vulnerability affects unknown code. This manipulation causes input validation. This vulnerability is handled as CVE-2012-2625. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Foundation Xen up to 25588 (Virtualization Software). It has been declared as problematic. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

The PyGrub boot loader in Xen unstable before changeset 25589:60f09d1ab1fe, 4.2.x, and 4.1.x allows local para-virtualized guest users to cause a denial of service (memory consumption) via a large (1) bzip2 or (2) lzma compressed kernel image.

The weakness was released 10/31/2012 (Website). It is possible to read the advisory at xenbits.xensource.com. This vulnerability is known as CVE-2012-2625 since 05/11/2012. The exploitation appears to be easy. The attack can only be done within the local network. The successful exploitation needs a single authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/19/2021).

The vulnerability scanner Nessus provides a plugin with the ID 74749 (openSUSE Security Update : Xen (openSUSE-SU-2012:1174-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165383 (SUSE Security Update for Xen (openSUSE-SU-2012:1174-1)).

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 (75781), Tenable (74749), SecurityFocus (BID 53650†), Secunia (SA49184†) and SecurityTracker (ID 1027090†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74749
Nessus Name: openSUSE Security Update : Xen (openSUSE-SU-2012:1174-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881461
OpenVAS Name: CentOS Update for xen CESA-2012:1130 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/04/2012 🔍
05/04/2012 +0 days 🔍
05/11/2012 +7 days 🔍
05/22/2012 +11 days 🔍
05/22/2012 +0 days 🔍
08/30/2012 +100 days 🔍
10/31/2012 +62 days 🔍
10/31/2012 +0 days 🔍
06/13/2014 +590 days 🔍
03/24/2015 +284 days 🔍
12/19/2021 +2462 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: RHSA-2012:1130
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-2625 (🔍)
GCVE (CVE): GCVE-0-2012-2625
GCVE (VulDB): GCVE-100-62791

OVAL: 🔍

X-Force: 75781
SecurityFocus: 53650 - Xen PyGrub Kernel Decompression Local Denial Of Service Vulnerability
Secunia: 49184 - Xen PyGrub Kernel Decompression Denial of Service Vulnerability, Not Critical
SecurityTracker: 1027090 - Xen PV Bootloader Bug Lets Local Guest Users Crash the System
Vulnerability Center: 36008 - Xen PyGrub Kernel Image Decompressing Error Allows Local DoS (System Crash), Medium

Entryinfo

Created: 03/24/2015 12:22
Updated: 12/19/2021 15:47
Changes: 03/24/2015 12:22 (63), 04/16/2017 11:08 (16), 12/19/2021 15:41 (3), 12/19/2021 15:47 (1)
Complete: 🔍
Cache ID: 216:C6B:103

Be aware that VulDB is the high quality source for vulnerability data.

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