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.
8.0	$0-$5k	0.00

A vulnerability classified as critical has been found in qemu 0.9.1-5 (Virtualization Software). This affects an unknown function. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

qemu-make-debian-root in qemu 0.9.1-5 on Debian GNU/Linux allows local users to overwrite arbitrary files via a symlink attack on temporary files and directories.

The bug was discovered 08/24/2008. The weakness was released 10/15/2008 (Website). The advisory is shared at bugs.gentoo.org. This vulnerability is uniquely identified as CVE-2008-4553 since 10/14/2008. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are 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 $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 34450 (Debian DSA-1657-1 : qemu - insecure temporary files), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (34450).

Productinfo

Type

• Virtualization Software

Name

• qemu

Version

• 0.9.1-5

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: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
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: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

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: 34450
Nessus Name: Debian DSA-1657-1 : qemu - insecure temporary files
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 61779
OpenVAS Name: Debian Security Advisory DSA 1657-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

08/24/2008 🔍
08/25/2008 +1 days 🔍
10/14/2008 +50 days 🔍
10/15/2008 +1 days 🔍
10/15/2008 +0 days 🔍
10/15/2008 +0 days 🔍
10/20/2008 +5 days 🔍
10/21/2008 +1 days 🔍
10/27/2008 +6 days 🔍
03/17/2015 +2332 days 🔍
08/02/2021 +2330 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: bugs.gentoo.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-4553 (🔍)
OVAL: 🔍

X-Force: 44831
Vulnerability Center: 19868 - Debian GNU/Linux Qemu Symlink Attack Allows Local Attackers to Overwrite Arbitrary Files, Low
SecurityFocus: 30931 - QEMU 'qemu-make-debian-root' Insecure Temporary File Creation Vulnerability
Secunia: 32335
OSVDB: 49165 - QEMU - 'qemu-make-debian-root' Insecure Temporary File Creation Issue

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/02/2021 13:57
Changes: 03/17/2015 16:11 (70), 08/20/2019 07:36 (8), 08/02/2021 13:57 (3)
Complete: 🔍

Discussion

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