libguestfs up to 1.5.22 information disclosure

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 (≈)
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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.

A vulnerability, which was classified as problematic, was found in libguestfs. Affected is an unknown code block. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

libguestfs before 1.5.23, as used in virt-v2v, virt-inspector 1.5.3 and earlier, and possibly other products, when a raw-format disk image is used, allows local guest OS administrators to read files from the host via a crafted (1) qcow2, (2) VMDK, or (3) VDI header, related to lack of support for a disk format specifier.

The weakness was released 11/04/2010 (Website). The advisory is available at This vulnerability is traded as CVE-2010-3851 since 10/08/2010. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 50567 (Fedora 13 : libguestfs-1.6.0-1.fc13.1 (2010-17202)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

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 (62636), Vulnerability Center (SBV-28037) and Tenable (50567).



CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍



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Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

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Current Price Estimation: 🔍


Nessus ID: 50567
Nessus Name: Fedora 13 : libguestfs-1.6.0-1.fc13.1 (2010-17202)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 862636
OpenVAS Name: Fedora Update for libguestfs FEDORA-2010-16835
OpenVAS File: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


10/08/2010 🔍
10/18/2010 +10 days 🔍
10/18/2010 +0 days 🔍
10/21/2010 +3 days 🔍
11/04/2010 +14 days 🔍
11/04/2010 +0 days 🔍
11/08/2010 +4 days 🔍
11/12/2010 +4 days 🔍
03/19/2015 +1588 days 🔍
09/28/2021 +2385 days 🔍


Advisory: RHSA-2011:0586
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-3851 (🔍)

X-Force: 62636
Vulnerability Center: 28037 - libguestfs before 1.5.23 Local Information Disclosure Vulnerability, Low
SecurityFocus: 44166 - libguestfs Disk Format Specifier Information Disclosure Vulnerability
Secunia: 41797 - libguestfs Qemu Disk Format Specifier Weakness, Not Critical
Vupen: ADV-2010-2874


Created: 03/19/2015 02:37 PM
Updated: 09/28/2021 11:35 AM
Changes: 03/19/2015 02:37 PM (58), 03/08/2017 10:03 PM (14), 09/28/2021 11:28 AM (3), 09/28/2021 11:35 AM (1)
Complete: 🔍


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