Kvm Qumranet KVM up to 81 memory corruption

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-$5k	0.00

Summaryinfo

A vulnerability was found in Kvm Qumranet KVM. It has been rated as problematic. This vulnerability affects unknown code. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2008-4539. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Kvm Qumranet KVM. This affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and (2) QEMU on Debian GNU/Linux and Ubuntu might allow local users to gain privileges by using the VNC console for a connection, aka the LGD-54XX "bitblt" heap overflow. NOTE: this issue exists because of an incorrect fix for CVE-2007-1320.

The bug was discovered 09/11/2008. The weakness was published 12/29/2008 by Tavis Ormandy (Website). It is possible to read the advisory at redhat.com. This vulnerability is uniquely identified as CVE-2008-4539 since 10/13/2008. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 52 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 34685 (FreeBSD : qemu -- Heap overflow in Cirrus emulation (07bb3bd2-a920-11dd-8503-0211060005df)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116422 (Debian Update for qemu (DSA-1799-1)).

Upgrading to version 19 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (47736), Tenable (34685), SecurityFocus (BID 23731†), OSVDB (35494†) and Secunia (SA25073†). Similar entries are available at VDB-36553, VDB-36552, VDB-36551 and VDB-39488. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Kvm Qumranet

Name

• KVM

Version

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CPE 2.3info

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CPE 2.2info

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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

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
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: 34685
Nessus Name: FreeBSD : qemu -- Heap overflow in Cirrus emulation (07bb3bd2-a920-11dd-8503-0211060005df)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 63995
OpenVAS Name: Debian Security Advisory DSA 1799-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: KVM 19

Timelineinfo

05/01/2007 🔍
09/11/2008 +499 days 🔍
10/13/2008 +32 days 🔍
11/01/2008 +19 days 🔍
11/02/2008 +1 days 🔍
11/03/2008 +1 days 🔍
11/10/2008 +7 days 🔍
12/29/2008 +49 days 🔍
12/29/2008 +0 days 🔍
03/17/2015 +2269 days 🔍
08/20/2019 +1617 days 🔍

Sourcesinfo

Advisory: redhat.com
Researcher: Tavis Ormandy
Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-4539 (🔍)
GCVE (CVE): GCVE-0-2008-4539
GCVE (VulDB): GCVE-100-45675

OVAL: 🔍

X-Force: 47736
SecurityFocus: 23731 - QEMU Multiple Local Vulnerabilities
Secunia: 25073
OSVDB: 35494 - QEMU and KVM Cirrus VGA buffer overflow
Vulnerability Center: 19958 - QEMU < 0.9.1_10 Heap Based Buffer Overflow in Cirrus Emulation, Medium

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/20/2019 14:24
Changes: 03/17/2015 16:11 (72), 08/20/2019 14:24 (10)
Complete: 🔍
Cache ID: 216::103

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Discussion

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