Linux Foundation Xen 3.0/3.0.2/3.0.3/3.0.4/3.1.2 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

A vulnerability has been found in Linux Foundation Xen 3.0/3.0.2/3.0.3/3.0.4/3.1.2 (Virtualization Software) and classified as problematic. This vulnerability affects an unknown code block. 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. CVE summarizes:

Buffer overflow in the backend of XenSource Xen Para Virtualized Frame Buffer (PVFB) 3.0 through 3.1.2 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a crafted description of a shared framebuffer.

The bug was discovered 05/13/2008. The weakness was released 05/14/2008 as Bug 443078 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2008-1943 since 04/24/2008. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 79449 (OracleVM 2.1 : xen (OVMSA-2008-2007)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117309 (CentOS Security Update for xen (CESA-2008:0194)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (42387) and Tenable (79449). Entries connected to this vulnerability are available at 39488, 39434, 41301 and 42377.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

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Current Price Estimation: 🔍

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Nessus ID: 79449
Nessus Name: OracleVM 2.1 : xen (OVMSA-2008-2007)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 870007
OpenVAS Name: Rhino Software Serv-U SITE SET Command Denial Of Service vulnerability
OpenVAS File: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

04/24/2008 🔍
05/13/2008 +19 days 🔍
05/13/2008 +0 days 🔍
05/13/2008 +0 days 🔍
05/14/2008 +1 days 🔍
05/14/2008 +0 days 🔍
05/14/2008 +0 days 🔍
05/19/2008 +5 days 🔍
10/03/2008 +137 days 🔍
11/26/2014 +2245 days 🔍
03/16/2015 +110 days 🔍
08/10/2019 +1608 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: Bug 443078
Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-1943 (🔍)
OVAL: 🔍

X-Force: 42387
SecurityTracker: 1020008
Vulnerability Center: 18408 - XenSource Xen Para Virtualized Frame Buffer (PVFB) 3.0-3.1.2 Local DoS and Code Execution, Medium
SecurityFocus: 29183 - Xen Para Virtualized Frame Buffer Backend Local Buffer Overflow Vulnerability
Secunia: 29963
OSVDB: 45411 - Xen - Para Virtualized Frame Buffer Backend Local Denial of Service Issue
Vupen: ADV-2008-1900

See also: 🔍

Entryinfo

Created: 03/16/2015 17:00
Updated: 08/10/2019 12:12
Changes: 03/16/2015 17:00 (77), 08/10/2019 12:12 (12)
Complete: 🔍

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